Jejumok Gwana was the center of Jeju-Do governance during Joseon Dynasty. Jejumok Gwana is a Korean cultural heritage registered officially as Treasure No. 322.

It is the location where major government office facilities including Gwandeokjong Pavilion were located.

Jejumok Gwana has served as the political, administrative, and cultural center of Jeju.

The government office facility began its history immediately after the building was destroyed by fire in 1434, and the framed structure was built in the following year.

Jeju Mokgwana was intensively destroyed during the Japanese colonial period, and no traces could be found except for Gwandeokjeong.

Correspondingly, Jeju City conducted four archeological excavations from 1991 to 1998 to identify and restore the location and size of Dongheon and Naea building sites.

Along with various cultural layers from the Tamra era to the Joseon era, Dongheon and Naea building sites were also the main facilities of Jejumok Government Office.

On March 30, 1993, Jejumok Gwana area was designated as Historic Site No. 380.

This decision was based on three evidences, namely :

The cornerstone and stylobate confirmed during the excavation process

Documents of the party such as 『Tamra Sunryeokdo (耽羅巡歷圖)』 and 『Tamra Bangyeongchongnam (耽羅防營總攬)』

Central Cultural Heritage Committee members, local historians, experts, etc.

Based on the cornerstone and stylobate confirmed during the excavation process, it is based on the documents of the party such as 『Tamra Sunryeokdo (耽羅巡歷圖)』 and 『Tamra Bangyeongchongnam (耽羅防營總攬)』, as well as Central Judgments from Central Cultural Heritage Committee members, local historians, experts, etc.

The restoration work was completed in December 2002 after historical research and consultation.

Jejumok Gwana conveys Jeju's unique historical impact (to Korea / to the world).