Region: Kanto

Castles Near Tokyo

Tokyo itself was once Japan's most powerful castle town — Edo Castle, whose stone walls and moats still surround the Imperial Palace, was the largest castle complex ever built in the world at its peak. Beyond the capital, the Kanto region is scattered with castle sites ranging from approachable reconstructions to remote mountain ruins. Odawara Castle, home of the Hojo clan who resisted Toyotomi Hideyoshi's unification campaign, is just 50 minutes from Tokyo Station by shinkansen. Kawagoe offers a glimpsed keep alongside a preserved Edo-era merchant district. And for the historically adventurous, the mountain fortresses of Sengoku-era warlords dot the hills of Gunma, Saitama, and Kanagawa — all accessible as extended day trips.

Showing 24 castles in the Kanto region
Edo Castle

Edo Castle

江戸城 · Edo-jo

Ruins Free

📍 Tokyo — Kanto

The largest castle ever built in Japan — now the Emperor's residence — where you can walk the foundations of the tower that ruled a nation for 265 years.

A Tourism Score 80/100
B Defense Score 70/100
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Odawara Castle

Odawara Castle

小田原城 · Odawara-jo

Reconstructed

📍 Kanagawa — Kanto

The castle that Hideyoshi could not storm — famous less for its tower than for the legendary city-swallowing earthworks and the indecisive council that became a Japanese proverb.

B Tourism Score 72/100
B Defense Score 74/100
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Mito Castle

Mito Castle

水戸城 · Mito-jo

Ruins Free

📍 Ibaraki — Kanto

Home of Japan's most famous fictitious traveler and the intellectual dynasty that helped end the shogunate — a castle of ideas more than stone.

D Tourism Score 45/100
C Defense Score 68/100
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Kawagoe Castle

Kawagoe Castle

川越城 · Kawagoe-jo

Ruins

📍 Saitama — Kanto

The last honmaru palace in the Kanto region and the castle town that became 'Little Edo' — Kawagoe rewards visitors who want castle life beyond just the tower.

D Tourism Score 52/100
C Defense Score 66/100
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Hachigata Castle

Hachigata Castle

鉢形城 · Hachigata-jo

Ruins Free

📍 Saitama — Kanto

The cliff-top fortress that defeated Takeda Shingen — Hachigata's natural river defenses are among the best in the Kanto region, now preserved in an excellent earthworks park.

F Tourism Score 38/100
A Defense Score 86/100
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Bannaji (Ashikaga Clan Manor)

Bannaji (Ashikaga Clan Manor)

足利氏館(鑁阿寺) · Bannaji (Ashikaga-shi Yakata)

Ruins Free

📍 Tochigi — Kanto

The birthplace of the Ashikaga Shogunate — a living temple inside a perfectly preserved 12th-century warrior manor moat, where Japan's second shogunate had its origin.

D Tourism Score 40/100
C Defense Score 60/100
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Minowa Castle

Minowa Castle

箕輪城 · Minowa-jo

Ruins Free

📍 Gunma — Kanto

The castle that resisted Takeda Shingen and Uesugi Kenshin — a vast earthwork system in Gunma preserving the memory of the Nagano clan's remarkable defense.

F Tourism Score 35/100
B Defense Score 76/100
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Kanayama Castle

Kanayama Castle

金山城 · Kanayama-jo

Ruins Free

📍 Gunma — Kanto

The Kanto mountain castle that shouldn't have stone walls but does — an unexpected masonry fortress with water cisterns at the summit of a Gunma mountain.

D Tourism Score 42/100
A Defense Score 86/100
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Takiyama Castle

Takiyama Castle

滝山城 · Takiyama-jo

Ruins Free

📍 Tokyo — Kanto

Tokyo's forgotten mountain fortress — the Hojo clan's earthwork masterpiece held off Takeda Shingen, and its ridge-cut moats remain dramatic 450 years after abandonment.

F Tourism Score 35/100
A Defense Score 85/100
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Oshi Castle

Oshi Castle

忍城 · Oshi-jo

Reconstructed Free

📍 Saitama — Kanto

The Floating Castle that refused to sink — Oshi's 1590 water siege is one of the great underdog stories in Japanese military history.

D Tourism Score 48/100
C Defense Score 67/100
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Sugiyama Castle

Sugiyama Castle

杉山城 · Sugiyama-jo

Ruins Free

📍 Saitama — Kanto

Zero visual drama, maximum scholarly significance — Sugiyama is the 'textbook castle' that only the most serious castle enthusiast will truly appreciate.

F Tourism Score 30/100
B Defense Score 75/100
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Tsuchiura Castle

Tsuchiura Castle

土浦城 · Tsuchiura-jo

Ruins Free

📍 Ibaraki — Kanto

A lake-floating castle with two genuine Edo-period survivors — modest ruins, but the Lake Kasumigaura setting tells the whole defensive story.

F Tourism Score 35/100
B Defense Score 70/100
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Karasawayama Castle

Karasawayama Castle

唐沢山城 · Karasawayama-jo

Ruins Free

📍 Tochigi — Kanto

The castle that beat Uesugi Kenshin nine times — and now hosts dozens of cats among its mossy stone walls and mountain shrine.

F Tourism Score 38/100
A Defense Score 87/100
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Hachioji Castle

Hachioji Castle

八王子城 · Hachioji-jo

Ruins Free

📍 Tokyo — Kanto

Tokyo's forgotten mountain fortress — where thousands died in a single day when Hideyoshi came for the last holdouts of the Hojo clan.

F Tourism Score 38/100
A Defense Score 86/100
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Iwatsuki Castle

Iwatsuki Castle

岩槻城 · Iwatsuki-jo

Ruins Free

📍 Saitama — Kanto

Ota Dokan's swamp fortress — a water-island defense on the flat Kanto Plain that held Hideyoshi's army at bay longer than most.

F Tourism Score 32/100
B Defense Score 73/100
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Tateyama Castle

Tateyama Castle

館山城 · Tateyama-jo

Reconstructed

📍 Chiba — Kanto

The Satomi clan's coastal stronghold — best known as the setting that inspired Japan's longest classical novel, the 106-volume Hakkenden epic.

D Tourism Score 45/100
B Defense Score 73/100
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Numata Castle

Numata Castle

沼田城 · Numata-jo

Ruins Free

📍 Gunma — Kanto

Sanada clan cliff fortress above three river gorges — one of Sengoku Japan's most dramatic natural defensive positions, destroyed by Tokugawa political fiat in 1681.

D Tourism Score 42/100
B Defense Score 75/100
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Iwabitsu Castle

Iwabitsu Castle

岩櫃城 · Iwabitsu-jo

Ruins Free

📍 Gunma — Kanto

The Sanada clan's ultimate mountain refuge — one of Sengoku Japan's most dramatically positioned castles, now famous for sea-of-clouds autumn photography.

F Tourism Score 32/100
A+ Defense Score 92/100
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Otaki Castle

Otaki Castle

大多喜城 · Otaki-jo

Reconstructed

📍 Chiba — Kanto

The domain castle of Honda Tadakatsu — Japan's most famous undefeated samurai, who fought 57 battles without receiving a wound.

D Tourism Score 42/100
B Defense Score 76/100
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Ishigaki-yama Castle

Ishigaki-yama Castle

石垣山城 · Ishigakiyama-jo

Ruins Free

📍 Kanagawa — Kanto

Where Hideyoshi built a complete fortress in secret behind a mountain, then revealed it overnight to psychologically break the last castle that had never been conquered.

D Tourism Score 42/100
A Defense Score 85/100
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Kasama Castle

Kasama Castle

笠間城 · Kasama-jo

Ruins Free

📍 Ibaraki — Kanto

A medieval mountain castle above one of Japan's three great Inari shrines, with boulder-integrated stone walls and a famous spring azalea garden.

F Tourism Score 35/100
A Defense Score 87/100
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Nagurumi Castle

Nagurumi Castle

名胡桃城 · Nagurumi-jo

Ruins Free

📍 Gunma — Kanto

The tiny castle whose seizure triggered Hideyoshi's Odawara campaign — Japan's unification started here on a narrow Gunma ridgeline in 1589.

F Tourism Score 30/100
A Defense Score 81/100
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Sakura Castle

Sakura Castle

佐倉城 · Sakura-jo

Ruins Free

📍 Chiba — Kanto

The castle that hosts Japan's largest history museum — walk ancient earthwork moats, then explore 10,000 years of Japanese history without leaving the castle grounds.

D Tourism Score 48/100
B Defense Score 75/100
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Setagaya Castle

Setagaya Castle

世田谷城 · Setagaya-jo

Ruins Free

📍 Tokyo — Kanto

A 14th-century medieval castle ruin hidden in a central Tokyo residential neighborhood — five minutes from a tram stop, a world away from modern urban reality.

F Tourism Score 30/100
C Defense Score 61/100
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Getting There from Tokyo

  • Odawara Castle: 50 min from Tokyo Station (JR Tokaido Shinkansen or Odakyu Line). JR Pass valid on shinkansen.
  • Kawagoe Castle: 30–50 min from Ikebukuro (Tobu Tojo Line) or Shinjuku (Seibu Shinjuku Line).
  • Mito Castle: About 75 min from Ueno Station (JR Joban Line).
  • Edo Castle grounds: 5-minute walk from Tokyo Station (JR lines). The East Garden is free and open most days.
  • For mountain castle ruins, a rental car gives significantly more flexibility than public transport.