Saut de Seine is an inflatable bridge equipped with giant trampolines, dedicated to the joyful release from gravity as one bounces above the river. Installed near the Bir-Hakeim Bridge, the Saut de Seine Bridge is formed of inflatable modules, like giant life-preservers, 30 meters in diameter. In the central part of each ring, a trampoline mesh is stretched. The floating buoys, fabricated in PVC membrane, are attached together by cord to form a stable and self-supporting ensemble. Each module under tension, about 30m diameter - filled with 3700 cubic meters of air - develops in space with an arch-like form. Le total length of the bridge is about 94m. The Saut de Seine allows every visitor a novel view of Paris from his or her own unique spatial position: upright and leaping, upside down and tumbling, gliding above like a circus performer… The installation is located in direct relationship to Eiffel’s tower, itself a symbol of ephemeral architecture designed to provide a unique experience: a view of all of Paris. We think the superposition of these two works reveals a specific kind of architecture: one designed to install an experience of happiness in the city.