abstract appearance architectural background colors colours decorative Designs details distinct distinctive edged edges exterior external fancy interconnected interlinked light linear lined lines mosaic patterns perspectives rectangular rough shaped shapes slabs smooth stone stonework strength style surface surfaces textured textures thick thin tiled tiles uneven variation varied various wall wallpaper barrier constructed fitted fitting flat gaps secure security accommodation angles architecture box-like boxed building building-construction building-site building-work buildings concrete concrete-slabs concreting construction development elements gray grey home house modern modernistic plain prefabricated solid squared straight structured suburban urban views walls windows work