Jiayuguan is a city located in the Gansu Province of northwestern China. It serves as a significant historical and geographical landmark situated along the ancient Silk Road trade route.
The city is most notably recognized for its location at the western end of the Great Wall of China, where the fortification meets the desert. Historically, it functioned as a vital military outpost and gateway, providing defense against incursions from the west while facilitating transcontinental commerce.