Jiayuguan fortress with two gatehouses at the western end of the Great Wall, Silk Road, Gansu, China, Asia

architecture asia asian at attraction attractions building buildings castle castles china chinese day daylight daytime during end entrance entrances entry entry way entry ways entryway entryways exterior exteriors famous fortification fortifications fortress fortresses gansu gate gatehouses gates great jiayuguan known landmark landmarks nobody of outdoor photo photos renowned road seeing shot shots sight sights silk site sites stronghold strongholds the tourist tower towers two wall wall walls way ways well well known western with worth