abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed corner 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 clean angles curved curving off-white purple bibliotheek center Dordrecht facade gevel gothic Gotische Gulden Os library shop stadscentrum Visbrug winkel balconies balcony block blocks flats housing housings lawn Lithuania Vilnius windows yard