Falerii Novi, Ancient Roman archaeological site in Fabrica di Roma, Italy.

Falerii Novi is an ancient Roman walled town on a low volcanic plateau on the left bank of the Rio Purgatorio, about 50 km north of Rome and 6 km west of Civita Castellana. Its tuff-block perimeter wall had 50 towers and nine gates, and the gate and long stretches of the wall are still visible. Ground-penetrating radar has mapped a temple, baths with an open-air pool, a market and a covered passageway flanked by two large buildings near the north gate.

After the Falisci of Falerii Veteres revolted in 241 BC, Rome defeated them in a six-day war and resettled them here, 5 km west, on a low volcanic plateau by the Rio Purgatorio. The tuff walls had 50 towers and nine gates. It became the colony Junonia Faliscorum, perhaps under Augustus or not until Gallienus. Bishops are recorded until 1033, when desertion began; the last mention dates from 1064.

The name Falerii Novi means "New Falerii", distinguishing it from the older Faliscan stronghold of Falerii Veteres. The site is now a national heritage area where visitors can walk the entire circuit of the tuff-block walls, which had 50 towers and nine gates. The west gate stands near the 11th-century Benedictine abbey church, built with stone taken from the Roman structures.

The site is reached by a dirt road that branches off the road between Civita Castellana and Fabrica di Roma, so a car is the most practical way to get there. Sturdy footwear is a good idea, as the ground is uneven and some sections are active excavation zones.

Much of the town was mapped using ground-penetrating radar without any digging, revealing a detailed picture of streets and buildings that remain buried. These scans uncovered a temple and a large building with a long facade that had never been previously documented.