Jinshanling

Mighty and imposing, the Jinshanling (金山岭, Jīnshānlǐng) section of Great Wall has been thoroughly restored, but it's distant enough from Beijing that it sees far fewer tourists than the likes of Mutianyu. The landscape here can be drier and starker than at, say, Jiankou, but it's arguably more powerful, and it leaves you in no doubt that this is remote territory. Jinshanling is the finish (or the start) of an adventurous 6½-hour hike from Gubeikou.