The remains of the roman town can be visited
Roman City Nemausus-Tour Magne
The Roman city of Nemausus, now Nîmes, was a Gallo-Roman culture in the Occitanie region of France. The Tour Magne was part of the Roman city fortifications.
History+
Nemausus dates back to Celtic times, when it was a sanctuary of the Volcae Arecomici. In the 1st century BC, the city was incorporated into the province of Gallia Narbonensis by the Romans. The Tour Magne, originally a Gallic tower from the 3rd century BC with a height of 18 meters, was integrated into the seven-kilometer-long city wall by the Romans and raised to 36 meters. The city was located on the Via Domitia, had a mint, and counted around 25,000 inhabitants. Structures such as the Amphitheater, the Castellum, the Maison Carrée, and the Porta Augusta are preserved.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Tour_Magne_-_N%C3%AEmes.JPG?uselang=de
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: 43.8431, 4.3494