In the heart of Pontoise stands the Cathedral of Saint-Maclou. Enter this magnificent building and discover its different architectural styles and works of art.

Founded in the 12th century, this church, which has become a cathedral, has evolved over the years, combining different architectural styles: a chevet and a transept in primitive Gothic style, a flamboyant Gothic façade and Renaissance aisles. His stained glass windows were designed by great master glassmakers, representing the history of Pontoise and scenes from the Old and New Testaments.

The building and the works it houses have been classified as historic monuments.

The cathedral is located Place Du Petit-Martroy.