The Musée Pissarro takes part in the Journées du Patrimoine 2025. Located on the site of a medieval château, this museum pays tribute to the painter Camille Pissarro, who lived in Pontoise for 17 years. On Saturday September 20 and Sunday September 21, 2025, discover the museum and its gardens, while enjoying a beautiful view over the Val-d'Oise. A great way to spend a cultural weekend.