angles appearances arched architectural architecture buildings city contrast craftsmanship dark decorative Designs detailed distinctive elements exterior external heritage historic historical intricate leaf leaves light office offices old ornamental patterns perspectives prestige prestigious quality structures style tree windows ancient Angkor appearance archaeological archaeology buddhism cambodia cultural culture damp design encroaching encroachment features giant-spung-tree height high Hinduism history intertwined jungle lichen monument mosses Roots sculpted sculpture shaped spung-tree stones stonework surfaces Ta-Prohm temple temple-complex tetrameles-nudiflora textures thitpok trees weathered