The old water plant of Saint-Clair originally forms an important complex of which remains a 20m high steam pump, a filter basin of 1600m ² with vault supported by thirty pillars and a neoclassical building. After watching a video on the history of water in Lyon, discover a model of the site as it was at the end of the nineteenth century, the pump and the illuminated underground basin. The association offers free access to fun activities related to water.