Now known as: Shiro-yama (Castle Mountain/城山), Hachioujishiro-yama (八王子城山)

A mountain located in Tokyo, 445.5 meters in height. Houjou Ujiteru built his Hachiouji Castle at the summit. The "Hachiouji Castle Ruins Tunnel", a part of the Kenou Expressway, now passes beneath it.