This 17th century chapel was for nearly three centuries the seat of the Confraternity of the White Penitents, whose existence in Saint-Paul is attested to since 1581. The penitents were an association of lay people who came together for the purpose of piety and Christian charity. They carried out charitable actions for the most destitute to atone for their sins: care for the sick, distribution of clothing and food to the needy, distribution of grain to peasants who were victims of calamities. In addition to these missions, they also welcomed lost travellers and destitute pilgrims, whom they had to house and feed.

Restored in the early 2000s, the chapel was given a new decor a few years ago, entirely designed by the Belgian artist Jean-Michel Folon. His design was directly inspired by the penitents, as shown by the open, outstretched hands, ready to give and help. The light colours of the stained glass windows and paintings, the purity of the lines of the altar and holy water font, the chromatic richness of the mosaic contrast with the exterior of the building in rough stone. Note the astonishing triangular bell tower on the façade.