The three 30-meter-round inflatable modules are held together with a cord to form a self-supporting structure. Under the right amount of tension, each circle’s sides flip up, keeping Parisian bouncers at play from flopping into the river. Trampoline mesh is stretched along the inside of each ring, and floats above the water, where participants can enjoy the Seine without dipping into it. This super fun idea is not only more sustainable and environmentally friendly than the construction of a new bridge, but also allows for a new and exciting break from the city’s daily grind.