Located 26km south of the city proper, the sacred Kumbum Monastery (Ta'er si), is the best of the sights in the Xining area. This attraction is generally acknowledged to be one of the six most important monasteries along with the Ganden, Sera and Drepung monasteries in the Lhasa area, the Tashilhunpo Monastery in Shigatse and the Labrang Monastery in Xiahe. The ancient monastery, built during the 39th year (1560 AD) of the reign of emperor Jiajing (Ming Dynasty 1368-1644 AD), boasts a Tibetan name, Kumbum, which means a grand place housing 100,000 Buddhas. Located around 110km southeast of Xining in the Xunhua Sala Autonomous Prefecture, the Mengda Nature Reserve (Mengda ziran baohuqu) is a flourishing area of natural beauty, contrasting sharply with the great swathes of sterile land that cover Qinghai Province. The Great Mosque (Dongguan qingzhen dasi), built in the Ming Dynasty (1368-1644 AD) during the 12th year of the reign of the first Ming emperor.