2013 Evolo Skyscraper Competition entries are out of this world

Light Park Floating Skyscraper

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Light Park

credit: Ting Xu, Yiming Chen

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Third prize goes to Ting Xu and Yiming Chen for a floating skyscraper:

The Light Park stays afloat thanks to a large, mushroom cap-like helium-filled balloon at its top, and solar-powered propellers directly below. Programmatic platforms that host parks, sports fields, green houses, restaurants, and other uses are suspended from the top of the structure by reinforced steel cables; the platforms fan in different directions around the spherical vessel to balance its weight. These slabs are also staggered to allow for maximum exposure to sunlight on each level.

Given that we are running out of helium, this seems problematic. More at eVolo