ancient Angkor Angkor-Wat angles appearance archaeological archaeology buddhism Buddhist 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 style surfaces temple-complex temples textured textures weathered appearances architectural architectural elements architecture building city clan clan building clans colors colours contrast contrasting decorated decorations distinctive doors elements exterior external gates gateway green historic linear lines ornamentation patterns red reflections reflective shade shadows Singapore sunlight views walls arched austere closed-doors dark Designs detailed government government-buildings gray grey grime handrails light pillars power quality solid sound steps strength structures support windows