Towering over the old city of Pontoise and the Oise Valley, a large 19th-century house has been home to the Camille Pissarro museum since 1980. It's an extension of the Musée Tavet-Delacour, devoted to the city's historic collections. It pays homage to this master, considered to be one of the fathers of Impressionism, who set up his easel in Pontoise for nearly 20 years at the end of the 19th century. The first floor of the residence, situated on the Place du Château (on the site of the former royal château) hosts rotating exhibits from the collection of the Musée Tavet-Delacour. It also presents a collection of works and archives collected since the 1970s, including paintings such as the oil painting Péniche, engravings and sketches by Camille Pissarro and his three sons, and works by Daubigny, Hayet, Signac, and many other artists, who found that Pontoise was an ideal setting to express themselves.

The Camille Pissarro museum also tells the story of Impressionism in the region. The master brought painters such as Van Gogh, Cézanne and Gauguin here (and to Auvers-sur-Oise).