abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement coloring colors colouring colours constructed exterior external firm linear lines mortar perspective perspectives rectangular rough 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 colored coloured arch architecture brick-walls formation heritage historic historic-site kiln kilns landscape light lime-kilns park patched patchwork repairs rock rock-work rocks rubble ruins shadows stone stone-wall stone-work stones structure sunlight surfacing trees variations vegetation walls archway Historic site