I keep coming back to this awesome idea for a trampoline bridge across the river seine in paris so i guess that means i’ll just have to post it.  

From the minds of the Parisian firm Atelier Zündel Cristea

Dangerous? Maybe. Unrealistic? Probably. Really, really fun? Undeniably. The concept, which took third place in the competition, imagines a bridge made out of three giant trampolines, 30 meters in diameter, ringed by floating PVC buoys. Passersby would bounce across from one side of the Seine to the other—or, more likely, start to bounce from one side to the other, get caught up in the infectious joy of trampolining about halfway through, try a few backflips, see if they could launch their friends into the river, check out what the Eiffel Tower looks like upside down, and then continue on their way. The less adventurous, of course, could just use the Bir-Hakeim Bridge nearby.