Master thesis. A project focusing on the "Confluence" site where the Marne joins the Seine river. How to reactivate the potential of the banks? They are blocked by the highway on one side, and are an unfriendly area on the other due to the industries. Investigation of a different kind of verticality that could host temporary units of living. This structure is an anticipation for the next centenial flood. In 1910, the water went 6 meters above the normal level in Paris.