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Heritage classified

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Origin and history

The church Saint-Léonard-et-Saint-Martin de Croissy-sur-Seine, built from the 13th century, is an example of Gothic architecture in Île-de-France. Originally dedicated to Saint Martin, she also adopted the term Saint Leonard in 1211 (or 1280 according to the sources). The building underwent restorations in the 17th century, financed notably by Anne of Austria and local benefactors, with the addition of structural pulls. A southern chapel was built around 1730, while the porch was destroyed in 1856.

In the 19th century, population growth made the church too small. After the consecration of the new parish in 1882, it was disused and sold. The painter Theophile Poilpot acquired it in 1896, installing a small museum and integrating architectural elements of re-use (pament, 15th century fireplace). The Rivaud de la Raffinière family then added 14 painted panels (15th century) representing busts.

Purchased by the municipality in 1976, the church was restored in the 1980s–90s and opened to the public as a gallery and concert hall. Ranked a historical monument in 1942, it preserves traces of its transformations, mixing medieval heritage and modern additions. Its current address, 3 Grande Rue, makes it a central location of Croissy-sur-Seine.

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