Cheonsaeng Mountain Fortress

Cheonsaeng Mountain Fortress (天生山城) is a mountain fortress from the Joseon period located in Jangcheon-myeon, Gumi, Gyeongsangbuk-do, South Korea. It was designated as Monument No. 12 of Monuments of Gyeongsangbuk-do on December 10, 1974.

Overview

Located on the summit of Cheonsaeng Mountain, 4 km due east of Gumi Bridge, which spans the main stream of the Nakdong River, most of the inner and outer fortress walls lie in Sinjang-ri, Jangcheon-myeon, Seonsan-gun, while parts of the north, south, and western sides extend into Geumjeon-dong, Hwangsang-dong, and Sindong in Gumi. Built in a steep mountain alongside the Nakdong River, it served as a strategic military stronghold where nearby residents were evacuated and resistance was carried out during wartime. Together with the Geumo Mountain Fortress (金烏山城) of Geumo Mountain, which survives 15 km to the southwest, and the Gasan Mountain Fortress (架山山城) of Gasan, which survives 13 km to the southeast, it played a very important role as a fortress site in the Yeongnam region. The fortress is divided into inner and outer sections using two peaks of similar form; the west was treated as a sheer cliff using natural cliffs, and the north, east, and south were built in a taemoe style along the perimeter around the summit.

Inside the fortress, buildings such as a commander's platform (장대, 將臺), an armory (군기고, 軍器庫), and Manjiam Hermitage (萬持庵) once stood, but all have disappeared, and only the fortress walls, the east gate, and the flagpole supports (당간지주) remain today. During the Joseon period, a Byeoljang (別將) was stationed here to prepare for enemy invasions, making it a historically significant mountain fortress.¹

References

• Cheonsaeng Mountain Fortress - Cultural Heritage Administration Korea Heritage Portal

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