blue brick exhaust pavement rock roof sky Speaker wall window background bricks concrete crack cracked hole monument old tiles wallpaper abstract architectural backdrop barrier basic brick-wall cement color colored coloring colour coloured colouring constructed covered covering exterior external firm green mortar perspective perspectives Rendered rendering secure security solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various walled well-built brickwork colors colours linear lines smooth windows castle closed door Lithuania trokai troki wooden clean crisp detailed empty hd house stone urban ancient England historical rough sandstone Sussex building colapse construction decay Nyberg plaster white angle design line material mesh pattern square symmetry