The remains of the ancient town can be visited
Ponte Nomentano

The Ponte Nomentano, an ancient bridge in northeastern Rome, spans the Aniene River. Its medieval bridge tower is a testament to Roman engineering and later modifications.
History+
The origins of the Ponte Nomentano date back to the 1st century BC. For a long time, it lay outside the city walls of Rome and served as a crossing for the Via Nomentana. In 547 AD, the bridge was destroyed by Totila during the Gothic Wars but was rebuilt by 552 under the East Roman general Narses, with a late Republican arch suggesting only limited damage.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:RomaPonteNomentanoLatoValle.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 41.9336, 12.5325