Prieuré Saint-Louis de Poissy

The Prieuré Saint-Louis de Poissy is a former Dominican religious complex in northern France with surviving entrance portals and boundary walls that define its medieval layout. The site preserves architectural elements that reveal how the priory was organized to house its monastic community.

The priory was founded in 1304 by Philip IV of France to honor his grandfather Saint Louis and housed Dominican nuns from noble families. The monastery became an important center for religious affairs in the region during the medieval and early modern periods.

The priory's name honors Saint Louis, the founder's grandfather, and shapes the spiritual identity of the place to this day. The Dominican community shaped the religious life of the region through its presence and connections to noble families.

The priory's entrance now houses the Toy Museum of Poissy, allowing visitors to step inside and explore the medieval site. The grounds are easily accessible on foot and provide a quiet setting to walk through the historical complex.

In 1561 the priory's refectory hosted the Colloquy of Poissy, where Catholic and Protestant representatives debated under Charles IX's watch. This gathering marked a turning point in French religious discussions during the Reformation era.