Lay buildings include the Villa Gallio, a residence of Cardinal Bartolomeo Gallio, the Communal Palace (13th century), with the Dolphin Fountain by Giuseppe Olivieri and the Porta San Marco and Porta Posterola, the only remains of the seven gates once giving access to Priverno. Remains of the old Privernum are outside the town, including parts of the walls, baths, three patrician houses and a temple. Here a colossal statue of Tiberius (now in the Vatican Museum) was found in the late 18th century.