What better way to house a swimming pool than with a building built of bubbles? There was much to delight the eyes during the 2008 Summer Olympics in Beijing, but the PTW’s National Swimming Center ranks right up there as one of the coolest sights. The construction of the “wrap” is based on the structure of organic cells and the natural formation of soap bubbles. It is built of a lightweight and transparent Teflon called ETFE. The building also is highly green, in that it traps 90% of the solar energy passing through the bubbles to heat the pool water within.
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