Zhenbeitai Tower of the Great Wall, Yulin, Shaanxi Province, China, Asia

photography colour colour image color color image horizontal horizontal image outdoors outside day nobody no one no one travel travel destination travel destinations city cities tradition traditional yulin shaanxi province china chinese asia asian elevated view building exterior building buildings architecture architectural 14th century city walls fort forts fortified fortification fortress fortresses tourist destination great wall chinese city walls diminishing perspective vanishing point perspective zhen bei tai watchtower ming dynasty castle ramparts landmark landmarks famous well known well known