The Roman Walls of Lugo (Spanish, Galician: "Muralla Romana de Lugo") were constructed in the 3rd century AD. The walls were created as late Roman Empire fortifications. They are still largely intact today. They stretch over around the historic centre of Lugo in Galicia (Spain). Located on a hilltop the walls have a wide ditch directly in front of them. The walls average about in height and are up to thick. At the front of the wall there are a series of semicircular towers up to in diameter. The walls are constructed of schist from the local area. The walls have been declared a World Heritage site.