In Roman times, a road which linked Paris to Rouen ran through the village, along the banks of the river, and a small hamlet developed on this site, known to locals as « La Chaussée ». « La Chaussée » became « La Chaussée Charlevanne », a site famous or notorious until 1778 for its Leprosy Hospital-the largest in the country, known as Sainte-Madeleine de Charlevanne. The name Charlevanne may well be linked to the the fishing industry which flourished in the middle-ages in and around Bougival. (...)