Standing high on a hill overlooking Nakagusuku Bay, the castle consists of six enclosures. In 1440, Gosamaru, then lord of Zakimi castle, was relocated there. He is said to have extend the Nakagusuku castle vicinity. The castle is well-preserved with Ryukyu limestone ramparts. While there is Nunodzumi- style masonry used in certain walls, others are built according to the Aikata masonry technique, which tells us that the castle was not built at one time, but was more likely constructed over a long period of time. Lord Gosamaru is also famous for having overthrown Katsuren lord Amawari in 1458.
Designated a national historic site on May 15 1972.
Inscribed on the Register of World Heritage Sites in December 2000 as “Gusuku Sites and Related Properties of the Kingdom of Ryukyu.”