Gubeikou Great Wall, Beijing
Gubeikou town had been an important defense barrier in the past. In the region, there is a 1,500-kilometer-long Great Wall Section that was constructed in the year 555 AD, and to which it stretched from Yulin River in Shaanxi Province in the west, to Shanhaiguan in the east.
The Gubeikou Great Wall comprises three sub-sections, Crouching Tiger Hill, Dragon Hill and Simatai Great Walls.