abstract angles appearance architectural architecture building contemporary contrast contrasting distinctive edged edges elements exterior external framed frames geometric geometric-shapes gray grey height high high-rise light linear lines modern patterned patterns perspectives sharp Singapore surface surfaces textured textures views wall walls windows background barrier basic coloring colors colouring colours constructed firm fitted large patchwork rock-wall rocks rugged secure security shaped shapes solid stone stones stonework strength strong style texture uneven variations various wallpaper well-built appearances arch arched Australia bricked bricks brickwork cover covered dark darkened entrance historic history lamp lampshade outside perspective shade shaded shadows shelter structure structures sunlight sunshine support view castellated castellation colonnade open-sided sepia dry-stone-hedge dry-stone-wall drystane-dyke free-standing local-stone old random randomly-coursed rock-fence rough rural stone-fence stone-walled variety walled