Mutianyu Great Wall
Mutianyu section is located in Huairou County, with a total length of 2250 meters and 22 towers to stop enemies. It has the biggest scale and highest quality of the Great Wall in the history. Many parts of Mutianyu are made up of granite. It is next to Gubeikou in the east and Juyongguan in the west. The best season to visit here is October.