Iha Castle, Gusuku fortress in Uruma, Japan

Iha Castle is a limestone fortress ruin standing on a high cliff that separates the districts of Iha and Ishikawa. From this elevated location, it commands wide views across the Ishikawa Isthmus and the surrounding landscape.

Iha Castle was built by Iha Aji I, a son of the King of Nakijin, after he settled in Iha village in the early 14th century. His descendants, including Gushikawa Aji and the warrior Gosamaru, fought alongside Shō Hashi to unify the three kingdoms of Okinawa. In 1511, under King Shō Shin, Iha Aji III abandoned the castle and moved to Shuri.

Inside the southern entrance stands Iha Nundunchi, a shrine and kami asagi, while the Iha Nur tomb lies to the west. Three worship sites on the hill are Mitsumori Gusuku no Take, Nakamori Gusuku no Take and Morigusuku no Take.

A marked entrance gate leads visitors to the ruins, where a stone Torii and information plaque explain the historical background. Good footwear is recommended because of the elevated location and rocky pathways.

Archaeological finds from the castle grounds reveal continuous human activity between the 13th and 15th centuries. These discoveries provide insights into the everyday life of medieval Okinawan people.