Bouncy Bridge Across the River Seine
Last fall, as part of "A Bridge in Paris" competition, the Parisian architecture firm of Atelier Zündel Cristea proposed a series of three giant inflatable trampolines 98 feet (30m) in diameter spanning the river Seine.
The bouncy, floating platforms would be twisted into arches and attached with a cord to create a bouncy bridge across the Seine. On either side of the bridge would be a set of stairs, as well as a slide for a quick descent.
It would have been the 38th bridge across the Seine, but the first to be made of trampolines.
The bouncy bridge was just a proposal, but maybe one day it will be built? You never know.