A room in the Museum of Ancient Arts of Namur houses the treasure of this priory. Saved from 1940 air raids, it includes early-13C works (evangelistaries and reliquaries) by a finely skilled Mosan goldsmith, Brother Hugo d'Oignies; the delicate nature of his work can be seen in particular in the black-background medallions, the filigree and the leaf decoration, often depicting little hunting scenes.