The lower rooms redesigned in the XVIIIth century house the collection of archeology. One can notice a large number of objects from the Bronze Age. It should be noted a very rare series of iron objects from the period Hallsatt and Iron Age II. A Gallo-Roman back a series of vases, amphorae, coins
and small bronze objects. A special place is made for the burial of Bessines which provided a rich grave goods (first century AD).