Yanmen is a town in Dai County, Xinzhou City, Shanxi Province, China. It is best known as the location of Yanmen Pass, also called Yanmenguan or Xixingguan, a mountain pass on the Great Wall of China that includes three fortified gatehouses.
The pass was a strategic choke point in ancient and medieval China, controlling access between the valleys of central Shanxi and the Eurasian Steppe. Its position made it the scene of various important battles, extending into World War II.
The area around the gatehouses and this stretch of the Great Wall is now an AAAAA-rated tourist attraction. The scenic area is located just outside Yanmenguan Village in Yanmenguan Township.