Jiayuguan city is a prefecture-level city in Gansu, China, with a population of 127,532 as of 2007. It is most famous for the nearby Jiayu Pass, the largest and most intact pass of the Great Wall of China.Covering an area of 1,298 square kilometers, Jiayuguan City is situated at the narrowest point of the western section of the Hexi Corridor bounded by the Qilian Mountains on the south, the Mazong (Horse´s Mane) Mountains on the north, the Jiuquan Basin on the east, and the Gobi desert on the north.

Highlights in and around Jiayuguan City include Jiayuguan Fort, wall paintings in tomb dating from the Wei (220-265) and Jin (265-42 periods, the First Beacon Tower, the Overhan ing Great Wall, the Great Wall Museum, and ti Heishan (Black Mountain) rock paintings.