appearance architectural architecture building built clock clock tower dark design elements external features gray grey height heritage historic masonry old ornamental ornamentation parapet perspectives roof roofing secure security solid Somber sombre stonework strength strong surfaces tower tower clock walls windows angles clock-face clock-tower color colored colorful colors colour coloured colourful colours community craftsmanship decorated decoration decorative display distinctive exterior high outdoors style time time-piece tower-clock wall wall-face arched Australian blue sky bricks brickwork christian church city doors doorway faith historical history religious Sacred stones urban arches blue shadows sky sunlight appearances architectural-elements Australia Colonial convicts historic-building iconic labor labour light Perth town-hall Western-Australia