Great Wall Fort at Jiayuguan

25, Watch Tower

The Fortress of Jiayuguan was first constructed in 1372 AD of the early Years of the Ming Dynasty. It was known as the "Most Magnificent Pass under Heaven" by reason of its strategic location, the "End Lock in Connection" by virtue of its end position on the Great Wall of China in the West and as "The Impenetrable Fortress under Heaven" for its grandiose Fortress and Citadel that had never been defeated.