It never had more than 25 monks and was destroyed and rebuilt several times with the abbey church only truly completed in the 16th century – Countess Marie II of Saint-Pol is buried in it.

It was finally reformed in 1754 by the Maurists and was rebuilt during the second half of the 18th century, until the French Revolution when it was dissolved – its monks were dispersed in 1789 and its buildings sold off to private owners in 1791.

The axial chapel of the abbey (from the 16th century) dedicated to the Virgin is the only surviving part of the main church as the nave collapsed in 1730.

Stained glass dating to 1552 depicts the life of the Virgin and, above the altar, an Annunciation attributed to Germain Pilon.

This elegant architectural layout was designed by Jehan Ribaud, former abbot of Bec Abbey, who headed Valmont in 1517.