At an elevation of 248 meters, Yuntai Mountain is the second-highest peak in the Matsu Islands after Beigan Pishan (elevation 294 meters). Not only is it the highest peak in Nangan, but it also ranks as the ideal spot for viewing the Matsu archipelago and the scenery of mainland China. It has now been officially designated as one of the "Little Hundred Peaks of Taiwan." To better understand the strategic condition of Matsu and the military activities on the opposite shore, the Matsu Defense Command, commonly abbreviated as "Ma Fang Bu," began constructing an Intelligence Gallery on Yuntai Mountain in 1996 to strengthen personnel's awareness of potential adversaries. However, considering the development of tourism in the Matsu region, materials displayed in the Intelligence Gallery were relocated in 2009, and the Matsu Defense Command also permitted the Matsu National Scenic Area Administration to renovate the facility, which opened to the general public on November 7 of the following year. From early spring to the beginning of summer, when the rainy and foggy seasons arrive, the surroundings become enveloped in ethereal mist. On clear days, the Beija Peninsula on the mainland is clearly visible. The scenery of Yuntai Mountain at night is even more spectacular—couples may enjoy a romantic view of Nangan's night lights from this vantage point, all the while.