Carlo Ratti Associati has teamed up with German engineer Schlaich Bergermann Partner and British design studio Atmos to design the world's tallest man-made structure. Nearly twice the height of the Burj Khalifa, the 1609-meter-tall tower was envisioned as a vertical "Central Park" clothed in vegetation and supported by a lightweight matrix of pre-stressed cables.
"Imagine you take New York's Central Park, turn it vertical, roll it and twirl it," said Carlo Ratti.