Usuki Castle

Usuki Castle is a former fortress in Usuki city, Oita Prefecture, on Kyushu island. Two preserved turrets and a continuous barrier wall structure the site, which is marked by stone ramparts and old foundations.

Otomo Sorin had the fortress built in 1562 and used it as his main stronghold during his rule over large parts of Kyushu. The complex lost its military role after the abolition of feudal rule in the 19th century.

The original name refers to Nyujima island, where the fortress was built before later connection to the mainland. Visitors can still follow the narrow access paths and staircases that were once designed for defense.

The site is about a 15-minute walk from the city center and sits on a gentle rise. Paths are mostly paved and lead between the remaining walls to the two turrets.

The Tatami Turret offers a wide view over the rooftops and the nearby bay. Locals often use the grounds for morning walks and as a shortcut between neighborhoods.