is a Ryukyuan gusuku in Itoman, Okinawa. References External links Gushikawa Castle Photos - Flick River Gushikawa Ruins Cape Kyan - Okinawa Hai Exploring Okinawa - Cape Kyan's Gushikawa Castle - Haisai Akage Gushikawa Castle Remains - Okinawa Film Office Gushikawa Castle Ruins - Itoman City Gushikawa Castle Ruins - Ryukyu Cultural Archives Gushikawa Castle (Itoman City) Castles in Okinawa Prefecture Itoman, Okinawa