Great Wall, restored section with watchtowers, Mutianyu, near Beijing, China

afternoon ancient civilisation ancient civilization archaeological site archaeology archeological site archeology architecture asia asian barrier building china chinese civilisation civilization color color image colour contemporary cultural culture curving day daytime defence east asia exterior far east great great wall heritage hill hilltop historical landmark history horizontal landmark morning mutianyu nobody outdoor outdoors outside peking photo photograph photography protection security structure sunny sunshine tourism tourist attraction tower tradition traditional travel travel destinations tree wall watchtower winding