Gallo-Roman wall of Nantes

The Gallo-Roman wall of Nantes was a wall surrounding the city of Portus Namnetum (today Nantes, France), from the period of Roman Gaul until the High Middle Ages, which is now in ruins. == History == During the Germanic invasions in the 270s, the city of Portus Namnetum, which covered the modern Bouffay quarter, was without defenses.

Source: Wikipedia — Gallo-Roman wall of Nantes (CC BY-SA 4.0)