Tourist couple walk the ancient Great Wall of China at Mutianyu, north of Beijing, China

1 couple activity vacations adventure travel ancient antiquities antiquity barracks barriers castellated walls china chinese chinese tourists coming down descending descent downhill east asia eastern culture ethnic diversity exotic locations far east force fortified high walls historical sites landmark long walk old stone one couple peking protection stone walls strength the great wall tourism site tourist destinations tourist site walking holidays wonders of the world world heritage site barrier boundaries boundary daytime defence fortification full length full lengths historic site horizontal landscape limestone outdoors outside place places of interest sightseeing sightseers stock image stock photo stock photograph tourist attraction tourist sight travel destination travel destinations travel photo travel photograph travel photography travel stock travels vacations walking world culture travel chinese culture international landmark national landmark landmarks tourism destination travelers visitors visiting travellers traveler traveller visitor visit world cultures culture national culture color image color colour scenic scenics landscapes