beijing - a man sitting on top of a staircase of an unrenewed gubeikou part of great wall of china. the wall is spreading

chinese wall china hiking great of adventure freedom caucasian man stairs gubeikou beijing mongolia greatwall simatai outdoors jinshanling tourist dynasty tourism building mountain landmark architecture tower nature heritage ancient hill landscape scenic travel ridge monument brick steps culture province ruin mountains scenery asia path sightseeing watchtower construction outdoor