Couple walking on the Great Wall of China at Gubeikou Section during late afternoon

couple great wall of china gubeikou late afternoon beijing drone aerial historical ancient fortification hiking mountains landscape architecture heritage site cultural travel tourism iconic asian landmark serene famous landmark chinese history stone wall people panoramic nature outdoors adventure great wall mountain range exploration sightseeing travel destination historic site greenery scenic view unesco famous structure trail ancient structure wilderness sunny day evening golden sunlight golden hour copy space text space sky