Visit Saturday 17/09 and Sunday 18/09 from 15:30: a guide speaker will reveal in depth the history and treasures of Saint Nicolas du Chardonnet. Built in the Great Century, decorated in part by Charles Le Brun, First Painter of King Louis XIV, and frequented by Saint Vincent de Paul, Saint Louise de Marillac or Saint François de Sales, this church is a beautiful illustration of the religious history of Paris and houses several treasures of Christian art. On the occasion of the European Heritage Days, free visits are also possible throughout the day from 7am to 8.30pm.