Jewel Changi Airport
This seven-storey high waterfall is a magnificent feat of architecture and engineering, as it is designed not only for aesthetic purposes. From the rooftop, rainwater is harvested and then funnelled and cascaded into a waterfall, which then serves as the massive tiered garden’s irrigation system. And if that doesn’t impress you enough, the HSBC Rain Vortex is transformed into a light-and-sound show every night between 8.30pm and 10.00pm.