The Museum is housed in the fourteenth-century building, that had been renovated and enlarged in the eighteenth century, the former Convento dei Minori Conventuali.
The exhibition is on three exhibition floors in chronological order: from Prehistory, the Volsci settlements until the Romanization and the Imperial period. Then it continues with the Middle Ages to modern times and industrialization with the birth and development of paper mills.
The route presents reconstructed models of the territory and of the Roman-Republican temple beneath the Cathedral of Santa Maria Assunta.
The museum has an area dedicated to contemporary art exhibits and a cloister for cultural and musical events.