It was a multiple teikaku-shiki (the central compound is placed adjacent to the castle walls, and additional compounds are placed surrounding the honmaru) mountain castle which stood at an altitude of 344 m to the southwest of JR West Yagi Station.
西日本旅客鉄道八木駅の南西にある、標高344mにある城山にある複合梯格式の山城である。