Ming dynasty Jiayuguan Fort dating from 1372, with Qilan Shan mountains in the Hexi Corridor, Gansu Province, China, Asia

1372 architecture asia asian culture building china color image day fort fortress gansu heritage hexi corridor historical landmark horizontal jiayuguan ming dynasty mountain nobody outdoors photography province qilan shan rooftop sunny tourist attraction travel travel destinations wall asian chinese color colour culture daytime east asia far east historical history landmark outside peak roof structure sunshine