The Museum is located beneath the Baroque Cathedral and the exhibition takes place among the archaeological ruins. After the restoration of several rooms, some huts from the Bronze Age and tombs dating from the fifth to third centuries BC, a medieval burial ground and the remains of the crypt of the Romanesque cathedral, came to light. In the exhibition the visitor can admire a rich collection of archaeological finds, the beautiful sculptures that survived the destruction of the Romanesque Cathedral, a sixteenth-century illuminated cross and crucifixes and statues ranging from the fourteenth to the eighteenth century.