Gubeikou great wall is located in miyun county 120 kilometers away from downtown beijing it is composed of two parts the main part of the gubeikou wall was first built in the ming dynasty 1368 ad while the other part was built in the beiqi dynasty 550 ad this section is the most intact and well preserved original section of all the sections in beijing you will also hike on jinshanling section on the second day and it is a exemplary section of the great wall and hence comes the saying