Get ready to swim, dance and chill on the Seine, on the Port de Javel side. The "L'Arche" aquatic complex project, an extension of the Parc André Citroën, is due to open this spring. With a floating pool, balneotherapy, guinguette and dance hall spread over 4,500 square meters by the Rosa Bonheur team, this is one spot you're going to love this summer in the 15th arrondissement.