The materials that have been unearthed during the last century – Latin inscriptions, freezes and marble  heads – has unfortunately been lost; some elements from antiquity have nevertheless been preserved at the ancient Post station on the via Flaminia and in local private collections, in addition to fragments of columns and ornaments, walled into some of the houses of the old town centre of Castelnuovo, as a memory of the past.

A few remains of a Roman villa, dating back to the late Republican Age, can still be found in the soil of the Fivoli vineyard, and others along the Campana vetus: a good stretch of this slate paved path is still visible just before the drinking trough of Vacchereccia. Ancient tufa quarries and underground sandstone pits are located near S. Sebastiano, Belmonte, Monte Cellano and Grotta Pagana.

A rare complex of wine making vats believed to date back to the early middle ages has also been found,  with six ‘pastarole’ (grape treading vats) excavated in the tufa rock surface can be seen along the Valle Vasca ditch. Finally a Paleo-Christian cemetery, with well preserved pits excavated ad different heights in the tufa rock has been noted close to the via Tiberina, near Ponte Storto, and was certainly used by the nearby settlement around the 5th – 6th C.