Church of St Augustine
It was built by swiss architect Giacomo Cantoni, in the years 1788-1791 on the foundations of the ancient Church of Santa Caterina, of which only the newly restored medieval crypt. In the church are preserved some valuable paintings, including the Annunciation of Ippolito Borghese, a painter originally from Sigillo, in 1617. The Sacristy is a small museum of sacred art.