alcoves architecture Aviary brick dove elements England english Great Britain home house nests pigeon roost roost holes rural adlershof beige berlin brown classic closeup colourful colours cube cubic decorative facade germany houses modern shape shapes window windows abstract art border concept decay design frame graphic grey grunge illustration old perspective rectangle rough scrapbooking urban wall white architectural backdrop background barrier brick-wall bricks brickwork cement coloring colors colouring constructed exterior external firm linear lines mortar perspectives rectangular secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various walled wallpaper well-built