ancient Angkor Angkor-Wat angles appearance archaeological archaeology buddhism Buddhist building buildings cambodia craftsmanship cultural culture damp decorative design features height heritage high Hindu Hinduism historical history jungle lichen mixture monument mosses old ornamental perspectives sculpted sculpture shaped stones stonework structures style surfaces temple-complex temples textured textures weathered Asia entrance road roadway sepia greyscale stairs steep steps ceiling colonnade columns cover covered dark historic light open-sided pathway pavement paving pedestrian perspective pillars posts secure security shade shadow shadows shelter strength strong structure sunlight sunshine support view views walking walkway