What Roman walls in Spain, surrounding Lugo, are a UNESCO World Heritage site?

The Roman walls surrounding Lugo in northwestern Spain are the Roman walls of Lugo, the surviving fortifications of the Roman city of Lucus Augusti.

Built between AD 263 and 276, the walls defended the city during the troubled later centuries of the Roman Empire. They extend for about 2,120 metres and retain an unusually complete circuit, including towers, gateways, a moat and the open strip once maintained between the wall and the city.

The fortifications are especially notable for their surviving towers: 49 remain intact and 39 more survive partially. Their irregular spacing and mixture of granite and slate reflect practical Roman construction rather than a perfectly uniform design.

Lugo's walls became a UNESCO World Heritage site in 2000. They are sometimes confused with Hadrian's Wall, the Aurelian Walls or the Walls of Constantinople, but those belong to different cities and defensive systems. Lugo's walls are a landmark of Roman Hispania and remain integrated into the modern city.