ancient Angkor angles appearance archaeological archaeology Bayon buddhism Buddhist cambodia craftsmanship cultural culture damp decorative design face faces features height heritage high Hindu Hinduism historic historical history jungle lichen mixture monument mosses old ornamental perspectives reflective sculpted sculpture shaped statuary statues stones stonework style surfaces temple-complex temples textured textures weathered arched arches architectural-elements architecture building coloring colors colouring colours creative decorative-battlements Designs distinctive exterior external glass light ornamentation outside patterns pigeons segment shapes solid strong sunlight sunshine surface traditional variations wall wall-segment windows broken shade shadows support supportive wall-stones walls