Goryōkaku Fort is classified as a flatland castle (its layout: Bastion), and is located in Hokkaidō. During the pre-modern age, it found itself within the borders of Ezochi Province. It is associated with the Tokugawa clan. Dates in use: 1866 - 1869.

The castle's layout is thus, for it's ability to withstand damage from cannon fire while at the same time allow many cannons to be placed on its walls. Significantly, it is the site of the final battle of the Edo period & of Japan's feudal era.

Timeline

1857	Construction of the castle commenced.
1866	Construction was completed.
1869	The castle fell to imperial forces.
2006	Reconstruction of the magistrate's office commenced.
2010	The magistrate's office was completed.

Historical recognition

Site	Special National Historic Site