The remains of the roman Aqueduct can be visited
Roman aqueduct of Nîmes

In the Occitanie region, France, is the Roman Aqueduct to Nîmes. This structure, whose most famous part is the Pont du Gard, once supplied water to the Roman city of Nemausus.
History+
The almost 50-kilometer long aqueduct was built to transport water from springs near Uzès to Roman Nîmes. While its construction was long dated to around 19 BC, recent archaeological findings suggest its creation in the mid-1st century AD. After its completion, about 20,000 cubic meters of water flowed daily to Nemausus. Approximately two-thirds of the route ran underground, carved into the rock. The entire construction features a slight gradient of an average of 24 cm per kilometer.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Mimova(Mimova (talk)) / Public domain via Wikimedia Commons
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: 43.9600, 4.5326