Castles in Japan / Castles in Okinawa Gushikawa castle ruins Itoman-shi, Okinawa.LocationRelated posts:Karakawa castleMatsumae castleKawagoe castleFukui CastleKamegajo castleNagoya castleHikone castleKiyosu castleHimeji CastleAzuchi castleIwatsuki castleHirado castle