The remains of the ancient town can be visited
Ancient City Castra Albana-Porta Praetoria

In Albano Laziale, Italy, is the ancient city of Castra Albana-Porta Praetoria. It is part of the former legionary camp Castra Albana and is one of the archaeological sites in Latium outside of Rome.
History+
The fortified camp of Castra Albana was founded under Emperor Septimius Severus (193-211) for the Legio II Parthica. It served to secure the emperor and Rome. Originally, the area contained only smaller fortifications, which were demolished for the construction of the camp. The Legio II Parthica, also known as Legio Albana, was established in 197 for the Parthian campaign. Under Emperor Caracalla (211-217), tensions arose with the legion, which he appeased by increasing their pay and constructing the Baths of Caracalla within the camp.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Albano_Laziale_-_Porta_Pretoria.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: 41.7290, 12.6593