cement wall gray color rough surface texture concrete material background detail architect construction

age antique architect architecture art artificial backdrop background bare blank block brick brickwork calciumoxide cement closeup concrete construction copy curtain decoration design detail effect element episode even exterior facade feature flat flatten floor gray grey grout grunge grungy hard level lime loft material mortar murk murky object obsolete paint partition pattern plain quicklime retro rugged scene screen seam slick smooth solid somber space street structure style surface tableau technique texture vintage wall