abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed exterior external firm linear lines mortar perspective perspectives rectangular secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various wall walled wallpaper well-built angles brown craftsmanship heritage historic local-stone old patched patchwork pattern patterns picturesque random randomly-coursed rock rocks rough shape shapes significant stone stone-walled stones stonework stucco traditional uneven variations variety arches architectural-elements architecture Australian barracks castellated castellation Colonial dark dated discoloration discoloured distinctive façade frontage height high limestone military multi-storey multi-story protection protective shade urban view views walls weathered weathering windows building buildings city clock clock-face construction contemporary contrast contrasting decorative detailed elements glass iconic light metal modern ornamental Perth quality structures time tower-clock town-hall blinds closed open reflections shadows sunlight sunshine