Kumamoto Castle

Timeline

1. 1467

   Chiba Castle Founded

   Ideta Hidenobu of the Kikuchi clan builds a small fortress called Chiba Castle on Chausuyama, the beginning of Kumamoto Castle's history.

2. 1588

   Kato Kiyomasa Arrives

   Granted 195,000 koku of northern Higo Province by Toyotomi Hideyoshi, Kato Kiyomasa takes up residence as castle lord.

3. 1591

   Construction Begins

   Drawing on his harsh experience at the siege of Ulsan in Korea, Kiyomasa launches full-scale construction of an early modern castle on Chausuyama.

4. 1607

   Castle Completed

   After sixteen years of construction, the castle is completed; the following year the area's name is changed to today's Kumamoto characters.

5. 1632

   Hosokawa Clan Takes Over

   Kiyomasa's son Tadahiro is stripped of the domain; Hosokawa Tadatoshi enters as the new lord of 540,000 koku and the clan rules until the Meiji era.

6. February 1877

   Satsuma Rebellion Siege

   A garrison of 4,000 holds off Saigo Takamori's 14,000 men for fifty-two days, leading to Saigo's reported lament that he had lost to Lord Kiyomasa.

7. February 19, 1877

   Keeps Destroyed by Fire

   A fire of unknown origin two days before Saigo's general assault destroys the great and small keeps, the Honmaru Goten Palace, and principal turrets.

8. 1933

   Cultural Property Designation

   Thirteen surviving buildings including the Uto Yagura are designated National Treasures under the prewar system (today's Important Cultural Properties).

9. 1955

   Special Historic Site

   The entire castle grounds are designated a Special Historic Site, the highest national rank for cultural property protection.

10. 1960

    Keep Exterior Reconstruction

    The exterior of the great and small keeps is reconstructed in reinforced concrete, a landmark of Japan's postwar reconstruction.

11. 2008

    Honmaru Palace Reconstruction

    Marking 400 years since the castle's completion, the Honmaru Goten Palace great hall is reconstructed in wood, reviving Edo-era architectural splendor.

12. April 2016

    Kumamoto Earthquakes

    Magnitude 7.3 shocks topple roof tiles and shachihoko, collapse many stone walls, and leave the Iidamaru turret balanced on a single column of stones.

13. April 2021

    Keep Reopens

    Five years after the earthquakes, the great keep's restoration is completed and the interior reopens as a symbol of regional hope and recovery.

14. 2052 (planned)

    Full Restoration Target

    Originally scheduled for 2037, the restoration timetable was extended in November 2022 to 2052, making this a multi-decade cultural property project.

Detailed History

Kumamoto Castle's history begins in 1467 when Ideta Hidenobu of the Kikuchi clan, then shugo of Higo, built a small fortress called Chiba Castle on Chausuyama. In 1496 Kanokogi Chikakazu raised a second fortification with the old Kumamoto spelling, and through the 16th century the Otomo and Shimazu clans contested the region. In 1588 Kato Kiyomasa received 195,000 koku of northern Higo after Hideyoshi's pacification of Kyushu. A veteran of the brutal siege of Ulsan, Kiyomasa began the great expansion of the castle on Chausuyama in 1601, after fighting on Tokugawa Ieyasu's side at Sekigahara in 1600 and receiving all of Higo (520,000 koku). The complex was finished in 1607, and the area's name was changed to today's characters. Legend holds that Kiyomasa dug 120 wells inside, planted edible taro stems beneath the tatami, and used kanpyo strips as plaster reinforcement that could be eaten in emergencies. In 1632 his son Tadahiro was stripped of the domain, and Hosokawa Tadatoshi took 540,000 koku; the Hosokawa held Kumamoto until the end of the Edo period. After the 1871 abolition of domains, the imperial Kumamoto Garrison was established. In February 1877 the Satsuma Rebellion made the castle the western anchor of the imperial response. Two days before Saigo Takamori's assault, on February 19, a fire of unknown origin destroyed the keeps, the Honmaru Palace, and the principal turrets. Yet General Tani Tateki's 4,000 men withstood Saigo's 14,000 for fifty-two days, and Saigo's reported lament that he had lost to Lord Kiyomasa rather than to the Meiji government became one of the most famous lines in modern Japanese history. In 1933 thirteen surviving structures including the Uto Yagura were designated National Treasures (today's Important Cultural Properties), and in 1955 the grounds became a Special Historic Site. The great keep was rebuilt in reinforced concrete in 1960, and from 2003 wooden reconstruction of the Honmaru Palace proceeded. The April 14 and 16, 2016 main shocks caused catastrophic damage: roof tiles and shachihoko fell, walls collapsed, and the Iidamaru turret stood on one column. Repairs began June 2016; the keep reopened April 2021. The full timetable, initially 2037, was extended in November 2022 to 2052.

Cultural Significance

Kumamoto Castle is counted alongside Himeji and Matsumoto (or, in alternate listings, Nagoya or Osaka) as one of Japan's Three Premier Castles, representing the apogee of Kato Kiyomasa's engineering. Thirteen structures including the Uto Yagura, eleven other turrets, the Akazu-no-mon gate, and a long wall are Important Cultural Properties, while the grounds bear the Special Historic Site designation — a rare double honor. The nickname 'Ginkgo Castle' (Ginnan-jo) derives from a great ginkgo in the Honmaru, said to have been planted by Kiyomasa as siege provisions; the first tree burned in 1877 and the current one is the second generation. The choice of ginkgo as a famine food captures Kiyomasa's siege-mindedness. The fifty-two-day defense during the Satsuma Rebellion, in which 4,000 government soldiers held off 14,000 men, became a defining episode in modern Japanese history, and Saigo's purported lament that he had lost to Lord Kiyomasa rather than the Meiji government remains a much-quoted line. The 2016 earthquake damage transformed restoration into a national project: more than 600,000 'Restoration Castle Lord' donors have contributed, making the castle a symbol of disaster recovery and heritage stewardship. NHK dramas including Aoi Tokugawa Sandai and Gunshi Kanbei have repeatedly used the castle as a backdrop.

Architectural Details

Kumamoto Castle is a connected-bailey hilltop castle of roughly 1.6 km east-to-west by 1.2 km north-to-south, built on the Chausuyama plateau (about 50 m above the plain). The keeps form a connected pair: the great keep (three-story, six-floor with basement, rising 30.3 m) and the small keep (two-story, four-floor with basement). The 1960 reconstruction used reinforced concrete but faithfully replicates the original contrast of black lacquered weatherboarding and white shikkui plaster. The complex originally held 49 turrets, 18 turret gates, and 29 smaller gates. The Uto Yagura — a five-story turret that alone escaped the 1877 fire — is designated an Important Cultural Property and is the only large-scale original Edo-period structure left on site. Stone walls show three masonry techniques side by side: uncoursed nozura-zumi, semi-dressed uchikomihagi, and dressed kirikomihagi. The Niyo-no-Ishigaki ('two-style wall') juxtaposes Kiyomasa-era and Hosokawa-era masonry as a living textbook. The signature musha-gaeshi walls curve from a gentle base outward to a sharp overhang, designed so attackers could climb partway but never surmount the top. Roof tiles were deliberately weighted to fall during earthquakes, lightening the load and saving the frame — a feature that proved its worth in 2016, when the keep's shell survived largely intact.