The remains of the ancient town can be visited
Porta Nomentana
The Porta Nomentana in Rome, an integral part of the Aurelian Walls, offers insight into the original design of Roman city gates, as it has undergone hardly any major structural changes, unlike many other gates.
History+
This gate was built between 271 and 275 AD as part of the Aurelian Walls and originally served as the starting point of the Via Nomentana. In 1564, the road layout was changed, and the Via Nomentana subsequently began at the nearby Porta Pia, built by Michelangelo on behalf of Pope Pius VI. Consequently, the passage of the Porta Nomentana was sealed with brickwork. The gate structure featured a 2.90-meter-wide and 5.50-meter-high passage flanked by two two-story towers. Its surface was faced with fine brickwork, and the complex had a flat roof fortified with battlements.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://en.wikipedia.org/wiki/File:Porta_Nomentana.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: 41.9086, 12.5020