The remains of the ancient town can be visited
Arco di Costantino

The three-arched triumphal Arch of Constantine in Rome was erected in honor of Emperor Constantine the Great. It commemorates his victory over Maxentius at the Battle of the Milvian Bridge in 312 and is one of the largest and youngest surviving triumphal arches in the ancient city.
History+
The construction of the Arch of Constantine began in 312 and was inaugurated on July 25, 315, marking the beginning of Constantine's tenth year of reign. The Roman Senate commissioned the work. The arch spanned the Via Triumphalis near the Colosseum, a route for triumphal processions.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Ozymandias
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Location: 41.8898, 12.4906