Japan’s 12 Original Castles: The Complete Guide to the Surviving Keeps

There are twelve original castle keeps left in Japan. Every other Japanese castle you have ever seen in a photograph — Osaka, Nagoya, most of Kumamoto, all but a sliver of Wakayama, the whole of Ōdawara — is a 20th-century concrete replica built on foundations that burned in the 1870s Meiji abolition wave, the 1891 Nōbi earthquake, or the US incendiary bombing raids of 1945. Out of more than 170 pre-modern tenshu that existed in 1867, twelve survive as wooden structures you can actually climb. I have been inside ten of them, and this is the list.

I want to say at the top what this article is not. It is not a ranking of the twelve by raw tourist appeal, because that ranking is obvious — Himeji wins, Matsumoto comes second, and everybody else loses. It is also not a complete history of Japanese castle architecture, because that would take a book and the book already exists. What this is, instead, is a single page that tells you what “original” actually means, why it applies to these twelve and not the other 150 or so that look pretty on postcards, and which of the twelve are worth a serious detour if you are going to spend a week chasing them down.

The twelve are scattered across four main regions: one in far-north Tōhoku, three on the Japan Sea side, five along the Inland Sea corridor, and four on Shikoku island. You can walk into almost all of them for under 1,000 yen. None of them take more than a day to visit individually, but the Shikoku four together are a proper five-day trip and the ones on the San’in coast are remote enough that you may want to build your itinerary around them. I will get to the itineraries below; first, the list.

What counts as “original”

An original tenshu means three things, in descending order of strictness. The building has to be wooden rather than reinforced concrete. The wooden frame has to predate the 1868 Meiji Restoration. And the frame has to be substantially the same timbers it was built from, not a modern copy that happens to be in wood.

That third rule is the one that trips most visitors up. Osaka Castle looks like a medieval tenshu, and it is, technically, wooden in some places — but the tower you photograph from the bullet train is a 1931 reinforced-concrete reconstruction with an elevator inside it. Nagoya the same; the 1612 keep burned in a US air raid in May 1945 and the current building is a 1959 ferro-concrete replica.

Kumamoto’s main keep, which I photographed in April 2016 ten days before the earthquake, is likewise a 1960 reinforced-concrete rebuild of a structure that the Meiji government burned in 1877 during the Satsuma Rebellion. None of these are on the list.

The twelve that are on the list all have the same story in outline. They were finished somewhere between the 1570s and 1854, they were tall enough to register as tenshu rather than mere yagura turrets, and they survived the 1873 Haijō Rei decree (which authorised the central government to demolish castles as obsolete military infrastructure) long enough for the preservation movement to start valuing them in the 1890s. Most of them were auctioned off by the Meiji state to private buyers who found the demolition and resale-of-timber too expensive to complete.

A couple were saved by specific civic campaigns. One — Maruoka — was knocked down by a 1948 earthquake and put back up using more than 80 percent of its original timbers, which the preservation committee decided counted.

Two of the twelve are legal workarounds. Hirosaki’s current tenshu was built in 1811 as a ninomaru corner turret because the 1615 Buke Shohatto decree forbade daimyō from building new keeps, and the Tsugaru had been without one since lightning detonated the gunpowder store of the original keep in 1627. Iyo-Matsuyama was rebuilt in 1854 as the previous 1784 keep had burned after a lightning strike, and the 1854 date puts it only fifteen years short of the Meiji cutoff.

Every one of the twelve is now a designated Important Cultural Property under the 1950 Cultural Properties Law. Five are also National Treasures — the highest designation Japan grants to a building — and that second list is the hierarchy worth memorising.

Five National Treasures, seven Important Cultural Properties

The five National Treasures are Himeji, Matsumoto, Inuyama, Hikone, and Matsue. The first four of those were promoted to National Treasure in 1952 when the new cultural-property legislation came in. Matsue joined the club much later — 5 July 2015 — after a 2010 restoration removed enough Meiji-era rebuilding to reveal that a load-bearing centre pillar was genuinely dated 1611, which was the piece of evidence the promotion committee had been waiting for.

The other seven — Hirosaki, Maruoka, Marugame, Bitchū-Matsuyama, Iyo-Matsuyama, Uwajima, Kōchi — are Important Cultural Properties (ICP). The ICP designation is not a consolation prize; it means the same legal protection as a National Treasure and the same restoration budget line. The distinction is closer to “first-rank” versus “second-rank” in a museum catalogue than to “protected” versus “not”.

If you only care about the NT five you can knock them off in two long weekends from Tokyo. If you want the full twelve you are looking at a minimum of three dedicated trips — Tōhoku for Hirosaki, a Honshū main-island loop for the central eight, and a Shikoku circuit for the four on the island. I did it across five separate visits over about seven years, and I would not recommend trying to compress all twelve into a single holiday unless you have a genuine reason to.

How I have ordered this list

Alphabetical order by castle name is useless. Alphabetical by prefecture is no better. Ordering by pure visual grandeur puts Himeji and Matsumoto first, after which the narrative collapses — everything else gets written as “also, but smaller than”.

I have instead ordered the twelve by date the surviving keep was completed, from oldest timber to newest. This works as a narrative because it lets you watch Japanese castle architecture evolve in real time. The earliest surviving keeps — Inuyama, Matsumoto, Maruoka — are dark-wood, compact, visibly military.

The mid-period keeps from the 1600s to the 1680s — Hikone, Himeji, Matsue, Bitchū-Matsuyama, Marugame — get progressively whiter, taller, and more ornate as the Tokugawa peace takes hold. The final three — Hirosaki in 1811, Kōchi in 1749, Iyo-Matsuyama in 1854 — are all Edo-period reconstructions that copy archaic styles because the shogunate ban on new keeps forced daimyō to justify rebuilds as “restorations” rather than fresh construction. The same eccentric top-floor veranda you see at Kōchi is there because the 1749 rebuild had to match the 1601 original or risk being classified as a new keep.

Read it as architectural chronology and the twelve start to make sense. One warning: “completed” here means the surviving frame, not the castle site. Several of these had earlier keeps that burned or were demolished — Hirosaki, Maruoka, Bitchū-Matsuyama, Marugame, Kōchi — and the keep you see now is the replacement. I will flag that in each section.

1. Inuyama Castle (1537 — oldest surviving timber)

Inuyama sits on an 88-metre bluff above the Kiso River in northern Aichi Prefecture, exactly where the Owari plain meets Mino. Dendrochronology of the main load-bearing timbers puts the earliest surviving core at 1537, which makes Inuyama the oldest wooden keep in Japan by a margin of about fifty years. The current four-storey structure is a composite — a 1537 core with upper floors added after the 1601 Oguri clan reconstruction — but the baseline timber is the oldest on the list.

Inuyama was built by Oda Nobuyasu, a minor branch-family Oda, as a forward base controlling the Kiso crossings between Owari and Mino. Nobunaga himself — who would go on to build the unprecedented five-storey Azuchi Castle on Lake Biwa a decade later — used Inuyama as a staging post through the 1560s. Toyotomi Hideyoshi captured it after Komaki-Nagakute in 1584. Ishikawa Sadakiyo held it for Tokugawa Ieyasu through the 1590s, and the Naruse clan inherited it in 1618 and kept it continuously until 2004.

What makes Inuyama worth a proper visit — over and above the age of its timbers — is the top-floor veranda. Most surviving keeps have a glass-enclosed top floor or a tiny railed lookout; Inuyama has a wraparound wooden deck that you can walk in the open air, with nothing between you and an 88-metre vertical drop but a period-appropriate railing. It is, incidentally, the single scariest surviving feature of any Japanese castle.

Logistically, Inuyama is 25 minutes on the Meitetsu line from Nagoya, which makes it the easiest castle on the list to slot into a wider Chūbu itinerary. Combine it with Gifu Castle for a Nobunaga-themed day trip, or string Inuyama and Matsumoto together via the Kiso Valley kaidō as a two-day historical walk. I have a full deep-dive on the Inuyama keep and the Naruse tenure — read the Inuyama Castle article for the complete history of the 1537 timber and the river-crossing geopolitics that explain why the castle is where it is.

2. Maruoka Castle (1576 origin, 1948 reassembly)

Maruoka is the smallest tenshu on the list and the one with the most complicated preservation story. Shibata Katsuie ordered the first keep built in 1576 to secure his nephew Katsutoyo’s new Fukui-side domain; the surviving tenshu is probably a 1620s Honda-clan rebuild that reused much of the Shibata foundation timber. Then in June 1948 the Fukui earthquake brought the entire building down. A restoration committee was set up, the debris was catalogued, and between 1950 and 1955 the keep was reassembled using approximately 80 per cent of the original timbers.

The preservation committee’s 1949 decision that this still counted as an original tenshu was controversial at the time. A purist position would have been to rebuild in reinforced concrete and reclassify the building as a reconstruction. The committee instead ruled that if you could demonstrably re-erect the existing timbers in their original configuration, the result was the same building with a interruption of service — the same logic that lets a cathedral retain its status across a fire-and-rebuild cycle. The Cultural Properties Agency re-confirmed Maruoka’s Important Cultural Property designation in 1950.

Architecturally, Maruoka is the list’s clearest example of an early-Azuchi-Momoyama-style keep. The stone base is made of locally-quarried Mesozoic chert, about 2.5 million years older than anything else under a Japanese castle. The first-floor skirt-roof (koshi-yane) — a feature all but gone from later keeps — compensates for the base being wider than the tower. The timber is dark, the interior is un-plastered, and the staircases are the steepest of the twelve by a noticeable margin.

Access is either from Fukui Station (30 minutes by local bus) or from Sakai via the Echizen Railway. Maruoka makes a good paired-day-trip with the Eihei-ji Zen monastery an hour east, or a swing-through on the route between Kanazawa and Fukui City. For the full story of the Shibata origin, the O-shizu hitobashira pillar-sacrifice legend, and the 1948 earthquake reassembly — read the Maruoka Castle article.

3. Matsumoto Castle (1593–1594)

Matsumoto is, alongside Himeji, the most photographed of the twelve — and for good reason. The keep is black-lacquered rather than plastered white, which immediately sets it apart from every other National Treasure on the list. The surrounding moat is still filled and the reflection angle from the southwest bridge is probably the single most reproduced image of a Japanese castle outside Himeji’s nishinomaru.

The daitenshu was completed in 1593–1594 by Ishikawa Yasunaga, whose father Ishikawa Kazumasa had been granted Matsumoto by Hideyoshi in 1590. The 2019 dendrochronology project on the main beams came back with felling dates in the 1592–1593 range, which matches the documentary record almost exactly. Yasunaga died in 1613, the Ishikawa were transferred out shortly after, and the castle passed through seven daimyō families in the Edo period without any of them rebuilding the main keep.

Matsumoto’s near-death moment was in 1872, when the Meiji government sold the whole complex at auction. A local schoolteacher named Ichikawa Ryōzō raised 10,000 yen from the town’s merchants to buy the castle back and stop it being dismantled for scrap timber. The keep developed a noticeable lean by the 1890s from the foundation stones sinking, and a 1903–1913 restoration campaign — again funded partly by local subscription — straightened it.

For visitors, Matsumoto is the most accessible of the non-Tokyo NT five. It is a 2h40 direct train from Shinjuku on the JR Azusa limited express, the keep is a fifteen-minute walk from the station, and the castle grounds are free even if you do not pay the 700-yen keep entry. The interior stairs are the steepest of any NT keep — some treads approach 65 degrees — which matters if you are bringing older relatives. Read the full Matsumoto Castle article for the Ishikawa founding, the 1872 civic rescue, and the 1913 lean-correction project.

4. Marugame Castle (1597 origin, 1660 current keep)

Marugame is, above anything else, a stone-wall castle. The keep itself is three storeys and only 15 metres tall, making it one of the shortest on the list. But the stone walls underneath it reach 60 metres from the plain to the honmaru — the tallest ishigaki in Japan by a measurable margin. If you drive up to Marugame the keep looks wrong because the scale is all in the base.

Ikoma Chikamasa built the first keep at Marugame in 1597, on the Kameyama hill in northern Sanuki Province overlooking the Inland Sea. The current three-storey tenshu dates from 1660 under Kyōgoku Takakazu, after an Ikoma-era attempt to dismantle the castle in the 1640s (per the 1615 one-castle-per-province decree) left only the ishigaki standing. The Kyōgoku family held Marugame from 1658 to 1871 and built the replacement keep and the surviving Ōte-ichinomon and Ōte-ninomon gates.

What Marugame gets uniquely right is the ishigaki-to-keep ratio. Almost every tenshu on this list sits on a modest stone base (10–15 metres). Marugame puts a tiny keep on top of a monumental platform, and the platform is the point. You walk up switchback stone stairs for fifteen minutes through successive tiers of wall — each built in a different era, with visibly different stone-fitting techniques — before the keep even comes into view.

Marugame is on the north coast of Shikoku, 45 minutes by Seto-Ōhashi train from Okayama. It combines naturally with Kotohira-gū (20 minutes inland by train) and with Takamatsu (35 minutes east). If you are doing a Shikoku loop, Marugame is your Day One on the island. Full detail on the Ikoma origin, the Kyōgoku rebuild, and the stone-wall chronology is in the Marugame Castle deep-dive.

5. Hikone Castle (1604–1622)

Hikone is the most architecturally sophisticated of the small keeps. The three-storey tenshu is 21 metres tall, which puts it on the compact end of the National Treasure five, but it cram-fits every major gable form — karahafu Chinese cusps, kirizuma gabled dormers, and chidori-hafu eyebrow pediments — onto that modest frame. The result reads as a textbook of Edo-era castle aesthetics in a single building.

The castle was built by Ii Naomasa’s son Ii Naokatsu and then by his brother Ii Naotaka, starting in 1604 and completing in 1622. The site is the Konki-yama hill on the east shore of Lake Biwa, which had been a Sawayama estate under Ishida Mitsunari until his October 1600 execution after Sekigahara. The Ii — Tokugawa Ieyasu’s senior red-armour general — were rewarded with Mitsunari’s old domain.

Hikone’s most interesting detail is that the main keep is reused. The upper structure was literally moved from Ōtsu Castle on the opposite shore of Lake Biwa in 1604 — the Ōtsu keep had been four storeys plus a basement, and Naokatsu’s carpenters cut it down a floor before reassembling it at Hikone, so that the new keep would not out-rank the Tokugawa’s own Edo Castle tenshu. You can still see the joinery scars on the interior beams where the fourth-storey posts used to tie in. Transplantation of tenshu between sites was common in the early 17th century and Hikone is the best surviving example.

Hikone is 50 minutes from Kyoto on the JR Biwako line and makes a natural stop on the Kyoto-to-Nagoya run. Combine it with the Genkyū-en garden (on the castle grounds, same ticket), the Hikone Castle Museum with the Ii-family armour collection, and the old Sawayama trail up to where Mitsunari’s castle used to stand. The Ii clan transfer story, the court-rank architectural restraint, and the cut-and-transplant mechanics are covered in full in the Hikone Castle deep-dive.

6. Himeji Castle (1609)

Himeji is the one the average visitor already has on their list and does not need me to sell. It is a UNESCO World Heritage site, it was Japan’s first building designated a National Treasure under the 1950 Cultural Properties Law, and the keep is the tallest on this list at 46.4 metres from stone base to rooftop. The 2009–2015 Heisei Restoration removed a century of weathering from the outer plaster and the white is now, for the first time since the Meiji period, visible at the intensity Ikeda Terumasa’s original plasterers intended.

The current keep was completed in 1609 by Ikeda Terumasa, Ieyasu’s son-in-law, using a 520,000-koku grant issued after Sekigahara. Terumasa demolished Hideyoshi’s earlier 1581 three-storey keep to build the current five-tower cluster; the Inui-kotenshu on the north-east corner still uses recycled 1581 timber. Himeji passed through the Ikeda, Honda, Matsudaira, Sakakibara, and Sakai families in the Edo period, none of whom did significant structural work on the keep.

Himeji’s survival through to 2026 is genuinely extraordinary. The castle sat on the US 21st Army Air Force’s bombing target list from early 1945; Himeji City was firebombed twice (3 July and 5 July 1945) and a single 500-pound incendiary bomb fell directly on the keep’s top floor. The bomb failed to detonate. The Meiji government nearly auctioned it for scrap in 1873, a crack in the daitenshu’s main pillar got worse through the early 20th century, and a 1956–1964 Shōwa restoration effectively disassembled and rebuilt the entire keep from the foundation up.

Himeji is a fifteen-minute walk north of Himeji Station, which is 45 minutes on the Sanyō shinkansen from Shin-Osaka or 2h50 from Tokyo. You should plan a minimum of three hours on site — the bailey circuit to the keep, the keep itself (allow 45 minutes for the climb and the interior rooms), and the Nishinomaru palace ruins are all worth your time, and the keep gets busy enough mid-morning that I recommend arriving at the 9am opening. The Ikeda Terumasa founding, the WW2 bomb that did not go off, and the Shōwa-era complete rebuild are all in the full Himeji Castle article.

7. Matsue Castle (1611)

Matsue is the National Treasure that only recently became a National Treasure. The keep was built in 1611 by Horio Yoshiharu on the low honmaru hill at the north edge of the modern city of Matsue in Shimane Prefecture. It was an Important Cultural Property from 1935 and got bumped up to National Treasure on 5 July 2015 after a 2010 restoration uncovered an inscribed dated timber in the central pillar that settled the 1611 completion date definitively.

Horio Yoshiharu was an old Hideyoshi retainer who switched sides at Sekigahara, got awarded the Izumo-Oki domain at 240,000 koku, and spent the last decade of his life building the keep. He died in 1611 — four months after the keep was completed — and his grandson Tadaharu inherited. The Horio line went extinct without a male heir in 1634, Matsue passed to the Kyōgoku briefly, and then in 1638 to Matsudaira Naomasa (a grandson of Tokugawa Ieyasu) whose line held it until 1871.

Matsue is architecturally distinguished by two features: black-lacquered lower walls (the nickname is Chidori-jō, the plover castle, for the stacked chidori-hafu dormer gables) and a floor-by-floor internal layout that preserves its original Horio-era plan. The black plank exterior on the lower storeys is genuine lacquered wood, not paint — the same technique used at Matsumoto and at the now-lost Okayama Castle. Sunlight at the right angle gives Matsue’s black plank walls a faint green-bronze sheen.

Matsue town itself is underrated. It is 3h30 from Okayama on the JR Yakumo limited express, the castle is a 15-minute walk north of Matsue Station, and you can pair the castle with the Adachi Museum of Art (one of Japan’s top three gardens, an hour east by train), the Lafcadio Hearn residence (five minutes from the castle), and the Izumo Taisha shrine (an hour west). Plan at least two nights here if you are coming out this far. The full 1611 Horio founding, the 2010 restoration discovery that caused the 2015 NT promotion, and the architectural comparisons to Matsumoto are all in the Matsue Castle article.

8. Hirosaki Castle (1611 layout, 1811 current keep)

Hirosaki is a special case on this list and probably the castle that stretches the definition of “original” the furthest. The site and the bailey layout date to 1611, when Tsugaru Nobuhira built the first five-storey keep on the honmaru platform. That keep was struck by lightning on the night of 28 September 1627, the gunpowder store on the top floor detonated, and the entire building was destroyed in a single explosion. Hirosaki then had no tenshu for 184 years.

The current three-storey tenshu was built in 1811 under the ninth Tsugaru daimyō Yasuchika. The 1615 Buke Shohatto decree forbade daimyō from building new tenshu, so Yasuchika filed the project with the Tokugawa shogunate as the reconstruction of a ninomaru corner turret rather than a new keep. The shogunate rubber-stamped the paperwork, possibly because bureaucrats in Edo had noticed (as Yasuchika had) that nobody else was going to rebuild a Tōhoku tenshu in 1811 and there was no strategic reason to stop him. The resulting 14.4-metre building is, legally, a yagura; everybody including the shogunate knows it is a tenshu.

Hirosaki’s 21st-century claim to fame is that the keep was physically moved. In October 2015 the entire 400-tonne building was jacked up, mounted on rails and rollers, slid 70 metres, rotated 25 degrees, and parked on a temporary platform at the northwest corner of the honmaru. The stone wall under the original site was then dismantled and rebuilt over nine years, and in spring 2025 the keep was slid back. It is, as far as I can tell, the only time an original Japanese castle keep has been physically transported off its foundations and returned.

Hirosaki is also the cherry-blossom castle on the list. Hirosaki Park has 2,600 cherry trees (most more than a century old) and the bloom window is late April to early May — two to three weeks after Tokyo. If cherry blossom is the reason you want to see a Japanese castle, this is the one. Full deep-dive on the Tsugaru Tamenobu founding, the 1627 gunpowder explosion, the Yasuchika legal workaround, and the 2015 keep-move is in the Hirosaki Castle article.

9. Uwajima Castle (1601 origin, 1666 Date rebuild)

Uwajima is a Tōdō Takatora castle. Takatora — Hideyoshi’s engineer-general and Ieyasu’s preferred castle-builder — got Uwajima in 1595 and built the first keep from 1596. He designed the castle footprint as a pentagon, which is the only pentagonal surviving castle in Japan and something you cannot see from the ground. From the air the five-sided bailey layout is unmistakable; on foot it just reads as a castle hill with walls.

The current three-storey keep is not Takatora’s original. That first keep lasted sixty years and was replaced in 1666 by Date Munetoshi, the second-generation Uwajima-Date daimyō. Date Masamune’s illegitimate son Date Hidemune had been granted Uwajima in 1614 at 100,000 koku, and his son Munetoshi commissioned the replacement keep, which is what survives. The Date family held Uwajima continuously from 1614 to 1871 — nine generations, 257 years — making it one of the longest single-family tenures among the twelve castles.

Uwajima is the most isolated of the Shikoku four. It is on the west coast of Ehime Prefecture, a 1h30 local train ride from Matsuyama down a single-track rural line. The town has about 70,000 people, the castle hill is in the centre, and the twenty-minute climb through successive stone-wall terraces delivers you to a keep that is small, dark, and — compared to Himeji or Matsumoto — visibly under-visited. I was the only person inside the keep at 2pm on a Wednesday in April 2023.

You come to Uwajima for the Date connection, the Takatora pentagon, and the sense of having a surviving original tenshu essentially to yourself. Combine with Matsuyama to the north (90 minutes by train) or with Kōchi via a scenic cross-Shikoku bus route (3h30 via Uwajima bus terminal). The Takatora origin, the 1614 Date grant, and the 1666 Munetoshi rebuild are covered in the Uwajima Castle article.

10. Bitchū-Matsuyama Castle (1683)

Bitchū-Matsuyama is the highest of the twelve — the honmaru sits at 430 metres above sea level on the Komatsu peak of Mount Gagyū, in the Takahashi valley of northern Okayama Prefecture. That elevation is not a trivia point. The cold air drains into the Takahashi river valley overnight, condenses into a cloud layer that fills the valley to below 400 metres, and — if the dawn conditions are right — leaves the castle floating above the unkai (sea of clouds). It is the only castle in Japan where this photograph is possible.

The surviving two-storey keep was built in 1683 by Mizunoya Katsumune, the third-generation Mizunoya daimyō, on the honmaru platform that Mimura Motochika had originally stonework-fortified in the 1570s. The stone walls are 1570s-Mimura with later Edo repair; the wooden structure above them is 1683-Mizunoya; the whole thing survived the Meiji abolition because the Takahashi council auctioneer decided in 1873 that dismantling a castle on top of a 430-metre mountain was going to cost more than the recovered timber was worth.

Getting to the castle takes effort. From JR Bitchū-Takahashi Station (1 hour on the Hakubi line from Okayama) you take a shared taxi to the Fuigo-tōge trailhead, then walk thirty minutes up a switchback mountain path to the honmaru. If you want the unkai photograph you also need to be at the Fukiyama observatory on the opposite ridge before dawn, which requires a separate early-hours drive and in practice a night in Takahashi city. The shared-taxi bookings from the station tourist office need to be made the afternoon before.

Bitchū-Matsuyama also has Sanjūrō, the official castle cat — installed as honorary lord by the Takahashi Tourist Association in December 2018 and credited, with varying levels of seriousness, with the post-Heisei-30 visitor-number rebound. The 1570s-Mimura stone walls, the Mizunoya reconstruction, the unkai meteorology, and the Sanjūrō installation are all in the Bitchū-Matsuyama deep-dive.

11. Kōchi Castle (1749 rebuild of the 1601 original)

Kōchi is the only castle on the list where the keep and the adjacent honmaru palace both survive. That sounds like a small distinction and it is not — every other surviving tenshu in Japan stands on an empty platform, because the timber-frame palaces that surrounded them burned with such reliability that none of the others are left. Kōchi kept its palace because the 1727 fire that destroyed the keep spared most of the honmaru residence, and because the 1749 rebuild consciously restored both buildings as a pair.

Yamauchi Kazutoyo built the first keep at Kōchi in 1601, after Tokugawa Ieyasu transferred him from Kakegawa to the Tosa Province at 242,000 koku as a Sekigahara reward. Kazutoyo was a Hideyoshi retainer who had played his cards carefully at Sekigahara — he did not fight, he kept his Kakegawa garrison, he let Ieyasu know he was available — and he was the kind of careful courtier you wanted running a rebellious province like Tosa, which had been Chōsokabe territory and was not thrilled about the change. His wife Chiyo is one of the more interesting Sengoku spouses; the horse-buying story of how she funded Kazutoyo’s early career is part of the Kōchi civic mythology.

The current four-exterior-storey three-interior-storey keep is a 1749 reconstruction after the 1727 fire. The Yamauchi instructed their carpenters to match the 1601 original “down to the eccentric details”, which explains the top-floor wraparound balcony — a feature you will not see on any other surviving tenshu because by 1749 the fashion had moved on, and Kōchi only has it because the rebuild was told to replicate the older style. The top floor was genuinely used by the Yamauchi as an observation room for typhoon season on the Pacific coast.

Kōchi is the southern point of the Shikoku four, 2h30 from Okayama on the JR Nanpū limited express or 4h30 from Takamatsu. The keep is a 15-minute walk from Kōchi Station through the central shopping arcade. Plan at least two hours on site to do the keep and the palace properly — the palace interior is the one piece of this list that nothing else can show you. The Yamauchi founding, the 1727 fire, the 1749 Yamauchi rebuild, and the unique palace-plus-keep pairing are covered in the Kōchi Castle article.

12. Iyo-Matsuyama Castle (1854 — the last one)

Iyo-Matsuyama is the latest-built of the twelve by a margin of almost a century, and it squeaks onto the list on a technicality. The original keep was built by Katō Yoshiaki in 1602–1603 as a five-storey main tenshu; Matsudaira Sadatsuna reduced it to three storeys in 1642 (citing court-rank considerations); the reduced keep burned after a lightning strike in 1784; and the 1854 rebuild — completed less than a year after the arrival of Perry’s Black Ships at Uraga — is what survives. That 1854 date is only fourteen years short of the Meiji Restoration cutoff, and the keep is, quite literally, the last castle keep built in Japan under the old political order.

Katō Yoshiaki was one of Hideyoshi’s Seven Spears of Shizugatake and an Eastern Army general at the Battle of Sekigahara. Ieyasu awarded him the Iyo-Matsuyama domain in 1600 at 200,000 koku, and the site he chose on Mount Katsuyama was a new construction rather than a conversion of an existing fort. The castle was transferred to the Gamō in 1627, then permanently to the Hisamatsu-Matsudaira (a Tokugawa collateral line) in 1635, who held it through the Meiji abolition.

Architecturally Iyo-Matsuyama is a linked-keep complex — a smaller version of Himeji’s renritsu-shiki arrangement, with the main tenshu connected by bridging corridors to a secondary ko-tenshu and corner turrets. The 1854 builders copied the 1602 layout almost exactly, because the Matsudaira filed the rebuild as a restoration to avoid the shogunate’s new-keep ban. You can see Yoshiaki’s personal armour inside the keep — still there, still on display in the original stand.

Iyo-Matsuyama is reached by a short ropeway up the north side of Mount Katsuyama from central Matsuyama city, or by a thirty-minute walk up the east side for anyone who wants the climb. The castle is a 20-minute tram ride from Matsuyama Station. Pair the castle with Dōgo Onsen (Japan’s oldest bathhouse, 15 minutes further on the same tram line) for the standard Matsuyama day. The Katō Yoshiaki founding, the 1784 lightning strike, and the 1854 Matsudaira rebuild-as-restoration are covered in the Iyo-Matsuyama Castle article.

Pick three if you only have a week

I get asked this often enough that I have a stock answer. If you have a week in Japan and you want to see three original tenshu, do not pick three National Treasures. Pick one from the NT five, one from the Shikoku four, and one from the Sanin/Tōhoku fringe.

The NT-five pick is Himeji. Nothing else in the category is close — Himeji is complete in a way that Matsumoto, Inuyama, and Matsue are not, and the twenty-minute walk through the bailey gates to the keep is the single best set-piece castle experience in Japan. If you substitute Matsumoto for timetable reasons that is acceptable; if you substitute Inuyama you are mistakenly prioritising convenience over depth. Hikone and Matsue, the other two NTs, are better suited as supporting castles on a longer trip.

The Shikoku pick is Kōchi, and this is where I get into disagreements. Most visitors pick Matsuyama because the ropeway is easy and the onsen pair is obvious. But Kōchi is the only one with a surviving palace, the top-floor balcony is the single most distinctive architectural feature in the surviving set, and Tosa Province itself has a historical weight — Chōsokabe, Sakamoto Ryōma, the Bakumatsu Tosa loyalists — that Matsuyama cannot match. Kōchi is also the southernmost of the twelve and the Pacific coast feels meaningfully different from the Inland Sea side.

The fringe pick is Bitchū-Matsuyama. It is the hardest to reach, the smallest, the highest, and the only one you can photograph floating above an unkai. If you have never done a pre-dawn drive for a castle photograph you have not done a serious castle trip in Japan, and Bitchū-Matsuyama is the place to fix that. Alternative fringe pick: Hirosaki if you are traveling in late April/early May and want the cherry blossom.

The castles I deliberately leave off the seven-day pick are Maruoka, Marugame, Uwajima, and Iyo-Matsuyama. Each is worth a visit on a longer trip, but none has the singular distinguishing feature that would justify displacing one of the three above. Maruoka’s reassembly story is the most interesting non-Himeji preservation tale, but the keep is the smallest on the list and a visual anticlimax.

Marugame has the tallest ishigaki but the keep itself underwhelms. Uwajima is isolated and rewarding but is effectively a smaller Matsuyama with a worse climb. Iyo-Matsuyama is the convenient Shikoku choice for anyone who has not made it down to Kōchi.

Regional itineraries

Here are the four itineraries I have actually run, with timings that worked. None of them assume a rental car unless explicitly noted.

Tokyo-access pair: Matsumoto + Inuyama

Matsumoto is 2h40 direct from Shinjuku on the JR Azusa; Inuyama is 25 minutes north of Nagoya on the Meitetsu line. You can do both as separate day trips from Tokyo, or string them together as a two-day trip via the old Nakasendō route — Matsumoto one afternoon, overnight in the Kiso Valley (try Tsumago or Narai), then down to Inuyama the next day via the Chūō main line to Nagoya. This is the easiest two-castle itinerary on the list and the one I suggest for first-time visitors.

Kansai base: Himeji + Hikone + Maruoka

Based in Kyoto or Osaka, you can reach Himeji in 45 minutes (Shin-Osaka to Himeji on the Sanyō shinkansen), Hikone in 50 minutes (Kyoto to Maibara on the Biwako line, then a short hop to Hikone), and Maruoka in about 2 hours (Kyoto to Fukui on the Thunderbird limited express, then a local bus). Treat Himeji as a full day, Hikone as a half-day, and Maruoka as a day trip combined with Eihei-ji temple. This group of three is the most historically coherent — all three are early-Edo Tokugawa-loyalist castles built between 1604 and 1622 — and makes a solid three-day core to a Kansai trip.

Shikoku circuit: Marugame + Iyo-Matsuyama + Uwajima + Kōchi

The four Shikoku castles make a clean five-day island loop. I run it counterclockwise from Okayama: bridge over to Marugame (Day 1), west along the north coast to Matsuyama via the JR Yosan line (Day 2 – Iyo-Matsuyama and Dōgo Onsen), south down the west coast on the Yosan line to Uwajima (Day 3), then east across the island on the JR Yodosen line and Doso line to Kōchi (Days 4–5). Add a day for the Iya Valley on the way back to Okayama if you have it. This is the itinerary I recommend for anyone who wants to see four of the twelve in a single efficient run; the Shikoku rail network makes it genuinely workable without a car.

Sanin coast: Matsue + Bitchū-Matsuyama

This is the pairing that requires the most commitment and pays off the best. From Okayama, take the JR Yakumo limited express 3h30 north to Matsue for the castle and a night at the Adachi Museum; backtrack to Takahashi (1 hour south) for Bitchū-Matsuyama; then return to Okayama. Done seriously this is three days minimum: Matsue day 1, Matsue to Takahashi on day 2 with an evening arrival, Bitchū-Matsuyama dawn unkai and daytime castle visit on day 3. This loop is where I would send a second-time castle visitor who had already done Himeji and Matsumoto and wanted something off the main trail.

Tōhoku far-north: Hirosaki

Hirosaki is genuinely far. It is 3h15 from Tokyo on the Tōhoku shinkansen to Shin-Aomori and then a 40-minute local to Hirosaki, and the castle only has one genuine killer window: cherry blossom, late April to early May. In the bloom window Hirosaki Park is probably the best castle-plus-sakura combination in Japan.

Outside the bloom window the castle is still worth a day for anyone completing the twelve, but you would not make the trip purely for the keep. Combine Hirosaki with Aomori for the Nebuta museum and with Towada-Hachimantai for the lakes, and plan three nights in the area.

Peak timing by castle

Each of the twelve has a season when it shows best, and a few of them have very narrow windows. This is the short version of what to plan around.

Hirosaki: late April to early May, cherry blossom. The 2,600-tree window moves year to year by about a week depending on spring warmth; the Hirosaki Tourism Office publishes a forecast from mid-March. Outside the bloom, the castle is acceptable but does not justify the trip alone.

Matsumoto: late April to early May for cherry blossom combined with snow-capped Hida mountain backdrops; October for autumn colour around the moats. Summer humidity makes the keep interior genuinely uncomfortable — I visited in August 2019 and the top floor was 35°C with no airflow. Avoid July through early September.

Maruoka: mid-April for cherry blossom (about 400 trees, less spectacular than Hirosaki but still the castle’s peak). Winter is cold and the moats freeze, which is photogenic but limits bailey access. Summer crowds are thin.

Inuyama: late March to early April for Kiso River cherry blossom (the riverside park is a major Aichi bloom site), July for the Inuyama Matsuri (the nationally-ranked summer festival), and the September–October Kiso rafting season for the river view. Avoid the August heat.

Hikone: late November for autumn colour around the Genkyū-en garden, and late March for cherry blossom around the moats. Lake Biwa winter fog is atmospheric and the castle looks good in it; I have a good photograph from February 2017 with the keep half-fog-wrapped.

Himeji: all year, because Himeji. Late March/early April for the cherry trees in the Nishinomaru bailey is the traditional peak. The Heisei-restoration plaster is now five years weathered and starting to soften back to a creamier tone; 2020–2021 was the whitest it will ever be in your lifetime.

Matsue: early June for the irises at the castle moats; November for autumn colour. Winter snow on the keep is good but rare — Matsue only gets a handful of snowfall days per year. The Adachi Museum an hour east changes scheduled exhibitions in January and July.

Bitchū-Matsuyama: late October to early December for the unkai dawn photograph. This is the narrowest window of the twelve and the one you most need to plan for. Low-valley fog that drops below 400 metres before sunrise and clears by 8am is the condition; about one morning in three in the peak window will deliver it.

Marugame: early April for cherry blossom in the bailey and autumn for the rice-stubble plain surrounding the hill. Summer heat is Inland Sea humid; avoid midday.

Iyo-Matsuyama: April cherry blossom is good but the keep is high enough on Katsuyama that the bloom window shifts a week later than the city below. Autumn is solid. Combine with Dōgo Onsen for a hot-spring-plus-castle itinerary in the November shoulder season.

Uwajima: July for the Ushi-oni festival and the nearby coastal walks. Late October for the quieter autumn window. Winter is mild on the Uwajima coast, which makes it a reasonable December add-on to the Shikoku loop when everywhere else is cold.

Kōchi: late March to early April for cherry blossom in the castle gardens; August for the Yosakoi matsuri in the downtown streets below the castle. The Pacific coast climate means Kōchi is warmer and wetter than the north Shikoku castles — plan for rain.

What you actually take away from climbing the keeps

The thing nobody writes about is the stairs. Original-construction Japanese tenshu were not designed for modern visitors and the interior staircases are the part of the experience that most consistently takes people by surprise. The treads are narrow, the risers are tall, and the pitch routinely approaches 60 degrees. On the way up you are pulling yourself with the wooden handrail on the inside of the stair shaft; on the way down you are backing down the stairs as if you were coming out of a ship’s ladder, because forward descent is genuinely dangerous.

I have watched older visitors give up halfway and come back down, I have watched smaller children be passed up the flights by parents, and I have watched one very determined octogenarian at Matsumoto take twenty minutes to descend a single flight using both handrails and both feet on each tread. It is the most physically demanding element of the visit, and every single keep on this list has it. The steepest are Matsumoto and Maruoka; the shallowest (relatively) are Matsue and Kōchi. If knees or balance are an issue, scout the climb angles before you commit; the official tourist websites tend to understate the difficulty.

The other thing worth saying is that the keeps are mostly empty inside. Some have small museum displays — Matsumoto has the gun collection, Iyo-Matsuyama has the Katō Yoshiaki armour — but most floors are just floor. Timber, plaster walls, a few explanatory panels.

This is not a failure of curation: it is an accurate reflection of what a working tenshu was, which is a signal tower and occasional arsenal rather than a residential or administrative building. The lord lived in the honmaru palace at the base, not in the keep. The top floor of any of these buildings was an observation room with a view, not a throne room with a throne.

That emptiness is, for me, the reason the originals matter. You climb 60-degree stairs five storeys up through rooms that are mostly just wood and plaster, come out onto the top floor, look out over whatever plain or river or mountain the keep was built to survey, and understand the building in a way no amount of reinforced-concrete reconstruction and electric-lift access can give you. Himeji is spectacular; Matsumoto is beautiful; Inuyama has the best view. But every one of the twelve, even tiny Maruoka and remote Uwajima, delivers the same observation — that a surviving original Japanese castle keep is fundamentally a tall wooden room at the end of a long hard climb, and the climb and the room are inseparable.

There are twelve of them. You will not regret doing more than three, and if you only do three you will want to go back. I am booking my Iyo-Matsuyama return for this November — the 1854 keep and the Dōgo Onsen for the last week of the autumn colour. If you are working your way through the list, that is the one I would slot in next.