Nakijin Castle Ruins, also known as Nakijin Gusuku or Hokuzan Castle, are located in Nakijin Village in northern Okinawa. The castle is one of Okinawa’s most important historic sites, combining the dramatic remains of a medieval fortress with sweeping views of the surrounding sea.
The castle is closely associated with the Kingdom of Hokuzan, one of the three rival powers that controlled Okinawa during the period known as the Three Kingdoms Era. The three powers—Hokuzan in the north, Chūzan in the central region, and Nanzan in the south—competed for control of the island before Okinawa was unified under the Ryukyu Kingdom in the 14th century.
Nakijin Castle was the residence of the King of Hokuzan before the kingdom was defeated by Chūzan. Built to take advantage of the natural terrain, the castle featured sophisticated defensive walls that made it an extremely difficult fortress to attack.
Many sections of the surviving stone walls were constructed using nozura-zukuri, one of the oldest Japanese techniques for building stone fortifications. Rough, naturally shaped stones were carefully fitted together, creating walls that blend beautifully with the surrounding landscape while revealing the engineering skills of the people who built the castle.
Historical tradition describes the King of Hokuzan as a powerful and formidable ruler. According to accounts of the castle’s fall, Nakijin was eventually captured after a betrayal involving bribery. The warrior who broke through the castle gates was said to have been a descendant of an aji, a local lord who had previously been killed by the King of Hokuzan.
Nakijin Castle was originally established before the formation of the unified Ryukyu Kingdom. The castle remains are believed to date from around the 12th to 13th centuries, although local legends attribute its construction to the legendary Lord of Nakijin.
According to historical chronicles such as the Chūzan Seikan and Chūzan Seifu, several legendary rulers and members of royal families were associated with the castle. One of the later rulers, Prince Wakugawa, was the second son of King Eiso and continued to rule Nakijin until he was defeated by Haniji, who became the founder of the Kingdom of Hokuzan.
In 1416, the Kingdom of Hokuzan was defeated by Chūzan King Shō Hashi. However, Nakijin Castle continued to serve as an important administrative base, with officials known as Hokuzan Supervisors stationed there after the kingdom’s fall.
These supervisors remained at Nakijin even after the Ryukyu Kingdom was invaded in 1609, until the system was finally abolished in 1665.
The prosperity of Nakijin can also be seen in archaeological discoveries made within the castle grounds. Large quantities of Chinese and Southeast Asian ceramics have been excavated from the site, providing evidence of the castle’s connections with international maritime trade.
Even after the fall of Hokuzan in 1416, Nakijin continued to play an important role in governing the northern part of Okinawa. The old name for Nakijin appearing in the ancient Ryukyuan collection Omoro Sōshi is recorded as “Miyaki Sen,” offering another glimpse into the area’s long history.
Nakijin Castle is recognized as an important part of Okinawa’s cultural heritage. In 1972, the ruins were designated a National Historic Site of Japan.
In 2000, Nakijin Castle became part of the UNESCO World Heritage Site “Gusuku Sites and Related Properties of the Kingdom of Ryukyu.” The group recognizes the distinctive history and cultural landscape of the Ryukyu Kingdom, including its castle ruins and sacred sites.
Nakijin Castle is also one of the castles included in Japan’s “100 Famous Castles” selection, reflecting its importance in the history of Japanese and Ryukyuan fortifications.
One of the greatest attractions of Nakijin Castle is the combination of historic stone walls and spectacular coastal scenery. The castle stands on elevated terrain, and views from the ruins extend toward the surrounding sea and northern Okinawan landscape.
The long stone walls follow the contours of the land, creating dramatic viewpoints as visitors walk through the former castle grounds. The changing light over the sea and the weathered texture of the stonework give the ruins a particularly atmospheric character.
Nakijin Castle is also famous for its Hikanzakura, or Ryukyu cherry blossoms. During the flowering season, rows of pink blossoms add vivid color to the ancient stone walls and pathways.
The combination of cherry blossoms, traditional stone fortifications, and panoramic views makes Nakijin Castle a popular destination for photographers and travelers who want to experience a different side of Okinawa.
Today, restoration and maintenance work continues at Nakijin Castle to preserve its historic remains for future generations. Visitors can walk through the castle grounds, explore the surviving stone walls, and imagine how the fortress once functioned as the center of the Kingdom of Hokuzan.
The site offers more than a glimpse of an ancient castle. Its archaeological remains, legends, historic connections with China and Southeast Asia, and dramatic natural setting provide a deeper understanding of Okinawa’s distinctive history before and during the Ryukyu Kingdom.
Nakijin Castle Ruins are a remarkable destination where history and scenery come together. From the ancient stone walls of the former Hokuzan stronghold to the blue sea stretching beyond the castle, the site offers an unforgettable view of Okinawa’s past and present.
For travelers interested in World Heritage sites, Ryukyuan history, ancient castles, archaeology, and spectacular coastal scenery, Nakijin Castle is one of northern Okinawa’s essential cultural attractions.
Regular hours (January - April, September - December)
8:00 a.m. - 6:00 p.m. (last admission at 5:30 p.m.)
Extended summer season (May-August)
8:00 a.m. - 7:00 p.m. (last admission at 6:30 p.m.)
Open year-round
Adults 600 yen
Junior high and high school students: 450 yen
Elementary school students and younger: free
Free (accommodates approx. 320 cars)
By bus: 15-minute walk from Nakijin Jogijiguchi Entrance bus stop on the Motobu Circulation Line, Nakijin Village, Imadomari