|Part of Boshin War|
|Near Hakodate in Japan|
Goryōkaku viewed from Goryōkaku Tower
governmental hall of the Republic of Ezo
|Built by||Takeda Hisaburō|
19th century map of Goryōkaku
Goryōkaku was designed in 1855 by Takeda Ayasaburō. His plan was based on the work of the French architect Vauban. It is shaped like a five-pointed star. This allowed for greater numbers of gun emplacements on its walls than a traditional Japanese fortress, and reduced the number of blind spots where a cannon could not fire.
Today, Goryōkaku is a park declared as a Special Historical Site, being a part of the Hakodate city museum and a citizens' favorite spot for cherry-blossom viewing in spring.
- List of Special Places of Scenic Beauty, Special Historic Sites and Special Natural Monuments
- Benten Daiba, another key fortress of the Republic of Ezo
- Citadel Hill, a similar shaped fortress in Nova Scotia, Canada
- Fort Bourtange, a similarly-shaped fortress in the Netherlands.
- List of foreign-style castles in Japan