Katsuren gusuku was a castle located in Katsuren, Uruma City, Okinawa Pref. The castle stood at an altitude of 68-98 m above sea level, 140 m from east to west and 85 m from north to south. It was built around 12th-13th centuries as a residence of Katsuren Anji. The last castellan that gave it a refurbishment was Amawari, who was a growing power in this area. To check his advance on the capital, Shuri King placed his retainer Gosamaru in Nakagusuku Castle. In 1458, Amawari defeated Gosamaru and advanced his forces to the capital, but was severely defeated and destroyed by the King’s forces.
Standing on a hill facing the Pacific Ocean, the gusuku looks like a castle in the sky. At present the castle ruin site is arranged into Katsuren Castle Ruin Park, where a lot of visitors come to enjoy beautiful landscape.