Castles in Japan / Castles in Okinawa Gushikawa castle ruins Itoman-shi, Okinawa.LocationRelated posts:Hara castle ruinsHikone castleKakegawa castleAzuchi castleIwakuni CastleKubota castleMaruoka CastleHiwasa CastleIchijodani castle ruinsJizozakinojo castleKanazawa CastleInuyama castle