Lugo is a city in the Galicia region of Spain, and it is the only city in the world to be surrounded by completely intact Roman walls. Dating from the 3rd and 4th centuries AD, these walls reach a height of 10 to 15 meters along a 2,117-meter circuit. The walls contain 85 external towers, 10 gates, four staircases, and two ramps. Each tower also contained access stairs to the walkway along the walls. Despite the renovation work conducted over the centuries, the walls still conserve their original structure and look today.

José Luis Municio

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