abstract architecture art backdrop background build building closeup concept construction cover design detail exterior fill geometric granite graphic gray grey home horizontal house illustration layer old pastel pattern pink roof row scrapbooking shingle slate stone structure surface texture tile top urban wall abandoned aged bathroom ceramic checks corner decay decor decorative dirty empty floor flooring grunge hospital inside interior marble mortar perspective retro room square stage stained vintage white worn angles appearance backgrounds barrier blocks coloring colors colouring colours constructed deteriorating fitted large limestone linear lines perspectives rock rock-face rockface rough secure security solid stones stonework strength strong surfaces textures variations variety walled weathered weathering well-built beige green blue beach black close-up color concrete crushed decoration gravel group hard macro material Mineral natural nature outdoor outdoors pebble road round sand shape small textured wallpaper antique architectural blank cement grain grainy grungy modern neutral paint part plaster plastering porous repair stucco wreck agenda arranged Ashton audience auditorium business chair chairs classical concert conference convention discussion entertainment event function furniture guest guests hall Lancaster lecture meeting memorial Palladian place prepared private semi-circle seminar Speaker talk theatre venue walls window distinctive edged edges external fancy fitting flat gaps interconnected interlinked light lined patterns rectangular shaped shapes slabs smooth style thick thin uneven variation varied various