air-controls amenities bubbling high-volume hot-tub hot-tub-spa hydrotherapeutic-massage hydrotherapy jacuzzi jet-technology jets jetted-whirlpool large-tub low-pressure massage massage-jets outdoor outside pump-system pumps sanitized sanitizing small-pool spa spiraling swirl swirling warm warmed water waterfall whirlpool backdrop background balance blue blurred brook cascade copy copyspace country countryside environment fall falling flora flow flowing fresh gold green harmony HDR motion pure purity rain rapid river rock season seasonal space spate speed splash splashing spring stone stream summer tranquil weir white yellow zen full atmospheric-humidity ceiling circles circular cool cooling curved curves curving decore descending design distinctive down down-pour downward drop droping glass high high-tech indoor-gardens inside interior light lighting liquid long public-area reflections skylight steel structure tall transparent unique ventilation visibility wet windows appearance aquatic aquatic-plants bush colors colours darkness edges floating foliage grass greenery leaves lilly-pad moving peace peaceful plants pond reeds reflecting reflection ripples rippling rocks running rushes shade shadows stones streaming sunlight sunshine surface texture textured textures water-lillies angled botanical-gardens cloud-forest conservatory conservatory-complex controlled- temperature cool-moist dome domes energy-efficient flowers gardens glasshouse greenhouse heating horticultural horticulture hothouse mountain optimized-conditions regulated-climatic-conditions Singapore sustainable-building-technologies tallest warm-growing-environment waterfalls