The Oppidum d'Ensérune is an ancient hill-town near the village of Nissan-lez-Ensérune, France, located between Béziers and Narbonne close to the D609 and Canal du Midi. It has been listed since 1935 as a monument historique by the French Ministry of Culture.
The settlement was occupied without interruption between the 6th century BC and 1st century AD on a hill with good views over the coastal plain, being close to the Via Domitia, the Montady lake, and fertile agricultural land below.
There is a museum on the site which offers a display of some of the finds on the site, as well as giving more information about the fort and the field system.
Wikipedia https://en.wikipedia.org/wiki/Oppidum_d'Ensérune
Address 34440, France
Coordinates 43°18'35.614" N 3°6'40.481" E