Japanese castles are fortresses constructed primarily of wood and stone. They evolved from the wooden stockades of earlier centuries and came into their best-known form in the 16th century. Castles in Japan were built to guard important or strategic sites, such as ports, river crossings, or crossroads, and almost always incorporated the landscape into their defenses.

Chihaya Castle is a late Kamakura period Japanese castle located in the village of Chihayaakasaka, Osaka Prefecture, Japan. Its ruins have been protected as a National Historic Site since 1934.