CapitaSpring is one of Singapore's tallest skyscrapers, but that is not the only remarkable thing about it. The glass and steel facade reveals pockets of green space, including a 4-story Green Oasis with spiraling walkways which mimic a tropical rainforest. CapitaSpring creator Carlo Ratti is a biophilic specialist and found a unique way of incorporating 80,000 plants and trees to make this skyscraper's occupants feel more connected to the outdoors. Here’smore about it.