abstract angled angles apartments architecture backgrounds buildings chinese colors colours contrast covered curved diagonal edge edges flats Haze heights high homes houses lines modern overlap overlapping patterns perspectives placement roof roofing roofs rooftops rooves rounded rows shape shapes Singapore smoke steep streets style surfaces texture textures tiles tiling units windows academic-institution backwall beams benches between-classes boys brown building children class classroom corrugated-iron corrugations decorated decorations design designed desks doors education furniture girls ground-floor interior light open open-space pillars posts property pupils room school school-uniforms seating shelter steps students whiteboard wood activities architectural-elements chemical-sanitation chlorinated exercise filled full glass heated hot-tub hydrotherapy indoor-pool indoors inside jacuzzi leisure lighting lit maintained monitored paddling-pool recliners reclining recreation reflections relaxation sanitized sheltered spa-pool swimming swimming-bath swimming-pool undercover wading-pool warm water