Jiayuguan is a prefecture-level city in northwestern Gansu province. It covers an area of 2,935 square kilometers with a population of 231,853 as of 2018. It is the most famous for the nearby Great Wall - Jiayuguan Pass, the largest and most intact pass of the Great Wall of China.
Jiayuguan Pass is not only the first strategic pass at the western end of the Great Wall of Ming Dynasty, but also the vital traffic hub of the ancient ‘Silk Road’. It is known for its good reputations of ‘the impregnable pass in the world" and "the west staring point of the Great Wall, etc. Originally built in the 1372 AD during the Ming Dynasty, after 168 consecutive years of construction, Pass City has become the most spectacular scenery along the Great Wall. In 1961, it was announced as one of the first batch of national key Cultural Relic units under Protection by the State Council and designated as the first demonstration base for national patriotism education in 1997.