Built in 1664 over 42 hectares, the Couvent de la Madeleine de Traisnel is primarily a boarding school for the upper class. In 1790, it became a weaving workshop, and then, in 1871, an artists' workshop, before becoming a condominium in 1997. This historic building is mentioned frequently in the works of two great writers, Alexandre Dumas and Patrick Süskind. A freestone building, the convent expresses the simplicity and rigor of classical buildings to religious vocation. During the visit, discover the old church tower(built in 1717) and we admire, in the passage, a staircase with balusters of the seventeenth century. The convent was rebuilt in the seventeenth by the famous French architect Jean-Sylvain Cartaud, to whom we owe the castle of Montmorency (in the Val-d'Oise).