Unmunsan Mountain (1,118 meters) is one of the seven mountains rising over 1,000 meters above sea level in the Yeongnam Alps in the Taebaeksanmaek Mountain Range. Unmunsan Mountain features dense groves, attracting a large number of hikers. From the summit, one can get a great view of the golden reeds on Cheonhwangsan Mountain to the south, and the ridges of Gajisan Mountain to the east.

There are various sized temples and hermitages on the mountain, nestled among a splendid landscape. Unmunsa Temple is situated at the foot of the mountain on the northern side. It was built by Sinseung in the 18th year of the reign of King Jinheung (557) of the Silla Kingdom. Though some buildings burned down during the Imjin War, the Obaengnahanjeon Hall and Gwaneumjeon Hall have been preserved in their original state. The dense groves of pine trees and fir trees add to the tranquility of the beautiful scenery. In the temple, seven treasures are kept, including the Stone Lantern at Geumdang Hall (Treasure). The historic relics date back to the Silla kingdom and Goryeo dynasty.