Guided tour of the water catchments of the Voulzie (Vicomté and Bassin) by the Water Agents of Paris (group of 12 people maximum). Eau de Paris is the custodian of a unique architectural heritage, inherited from the 19th century. Aqueducts, factories, reservoirs and pipelines: the public company ensures the maintenance and performance of these structures and exceptionally opens the doors of this magnificent heritage.