Katsuren Castle is a Ryukyuan gusuku in Uruma, Okinawa. In 2000, Katsuren Castle was designated as a World Heritage Site, as a part of the Gusuku Sites and Related Properties of the Kingdom of Ryukyu.
Wikipedia https://en.wikipedia.org/wiki/Katsuren_Castle
Address Japan
Coordinates 26°19'49.805" N 127°52'44.512" E