china, juyongguan. landscape with a mountain valley. in the background is visible section of the great wall of china

ancient and architecture area asia asian attraction attractions background beautiful beijing building china chinese construction day defense destinations environmental famous fork fortifications fragment great greatwall green heritage hillside horizon journey juyongguan landmark landscape medieval military monuments most mountain mountains nature old one outdoors outpost part place popular protection scene scenics section site sky summer sunny sunrise the top tourism tourist tourists tower travel unesco valley view visible wall watchtowers with world