metal orange ribs tank tanks water tank boats buildings castle London offices panorama river thames tower trees water aerial array avenues big apple clustered crowded dense downtown high houses large Manhattan matrix New York populated population roof gardens roof top roofs skyscrapers square streets tall urban water tanks abundant cambodia cement-mortar-jar common concrete concrete-product concrete-work container hand-made jars pipes plastic plentiful plumbing pots potted rain rain-collection round runoff storage storing urns water-collecting water-conservation water-container water-pots water-storage-jars water-tanks appearance architectural architecture Australia balcony brickwork building classrooms doors double-storey double-story education entrance exterior external railing rails Rooms rural safety school shade shelter small stairs steel steps sunlight sunshine two-storey two-story veranda verandah accommodation angles arched arches castellated castellation college crosses design elements height heritage historic historical history hostel masonry monastery old ornamental ornamentation Paddington-lace perspectives religious roofing rooves solid stonework surfaces walls windows wrought-iron fish flower plant WATER GARDEN waterlily appearances color colored colour coloured corrugated corrugations drinking-water faucet galvanised galvanized hose hoses rain-water raised rounded rust rusty supported tap volume water-supply