Young and old, discover the history of the lords of Méry-sur-Oise! This family tour will take you to the church, the castle, the old stables and the houses of the impasse du Château. This discovery circuit is the result of the inventory campaign of built heritage, carried out by the Departmental Archives Directorate (DAD). It is proposed by the DAD and the town hall of Méry-sur-Oise, and animated by Sébastien Porcheret, responsible for the mission of Inventory of built heritage within the DAD.