access accessibility angles architectural architecture banister between-floors craftsmanship descending down handrail inside interior perspectives staircase stairs steps tiled tiles ascending UP baluster balusters balustrade moulded-shaft polished skilled stained turn turning wood wooden woodwork carpet carpeting modern painted walls white angled arch arched edge edges edging historic sepia upward Beirut big building city compare comparison contrast floors Lebanon monotony repetition rows short small stories tall tower urban visual