Chinen Castle

Chinen Castle is a historic Ryukyuan gusuku fortification situated on a coastal terrace approximately 100 meters above sea level in Nanjō, Okinawa, Japan. Overlooking the Pacific Ocean at the southeastern tip of Okinawa Island, the site consists of ruins constructed primarily from Ryukyuan limestone and wood. Although the exact founding date remains unknown, the structure is believed to have been established prior to the 14th century, making it the second oldest castle in the Ryukyu Islands. The complex features two distinct enclosures: an older eastern section characterized by rough-faced stone walls and a newer western section built with precise ashlar masonry. This newer portion is attributed to Uchima Ufuya, the half-brother of King Shō Shin, and includes arched gates made of cut stone.

Historically, the castle served as the stronghold for the Aji of Chinen Magiri and held profound spiritual significance before the Sanzan Period. It was a destination for pilgrimages by the King of the Ryukyu Islands and the chief priestess. The interior contains unique ritual facilities, including a remote worship hall dedicated to Kudaka Island, which is central to Okinawa's creation legends, as well as a shrine for the god of fire. The site underwent extensive repairs during the 18th century under King Shō Kei but eventually fell into disuse by 1893. Today, the location is designated as a National Historic Site of Japan, a status granted in 1972.

Currently existing as protected ruins, Chinen Castle is open to the public and stands as a testament to the region's architectural and religious heritage. Visitors can explore the linked-wall structure that runs east to west, observing the contrast between the ancient rough stones and the later refined masonry. Located about a 45-minute drive from Naha Airport, the site offers both historical insight and scenic views of the surrounding ocean. Its preservation ensures that the legacy of the Ryukyu Kingdom's defensive and spiritual practices remains accessible for future generations.