Muralla Romana de Tarragona

Tarragona, Spain, Spain

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Muralla Romana de Tarragona in Tarragona, Spain, is one of the oldest and largest surviving Roman walls in the Iberian Peninsula, originally constructed around the late 3rd to 2nd century BC to enclose the ancient city of Tarraco.

Stretching about 3,500 meters originally with massive cyclopean boulder bases and mortarless squared stone blocks above, it features towers like those of Minerva and the Archbishop—later modified in medieval times—along with gates and posterns for defense.

Part of the UNESCO-listed Archaeological Ensemble of Tarraco, preserved sections now form the scenic Paseo Arqueológico walkway, offering elevated views and insights into Roman engineering amid the modern old town.