Château de Tanaka

Tanaka Castle is a Japanese castle in Fujieda with three circular moats spanning about 600 meters in diameter and six strategic defensive outposts arranged around the perimeter. The overall design reflects a fortress complex built with layered defensive systems.

The castle was built in 1537 by the Imagawa clan of Suruga and gained military importance during the Takeda clan's invasion of Suruga province in 1570. It thus served as a key site during a major period of regional conflict.

The castle grounds hold several moved buildings including a watchtower, communal living spaces, stables, and a traditional tea room. These structures show how daily life functioned within a castle compound.

The easiest access is by bus from JR Nishi-Yaizu Station or by car, roughly ten minutes from Yaizu Interchange on the Tomei Expressway. The site is walkable and visitors should wear comfortable shoes since the grounds can be explored on foot.

The circular layout with triple moats is a rare example of Koshu-style fortification architecture in Japanese castle construction. This particular building style was uncommon in other regions and makes the location historically notable.