Here you can see various Gallo-Roman collections, including a bronze socle inscribed to Emperor Claude. In the crypt, there are relics of a house from the early 2C and foundations of a Gallo-Roman wall. There are some beautiful examples of medieval sculpting in the Gothic hall. There are stained-glass windows recalling Adam and Eve. On the level above, there are works by the history painter from Senlis Thomas Couture (1815-1879), and naïve artists from the 20C are also featured.