Just off the A6 freeway, Galicia's oldest provincial capital is most notable for its 2-km (1½-mile) Roman wall. These beautifully preserved ramparts completely surround the streets of the old town. The walkway on top has good views. The Baroque Ayuntamiento has a magnificent rococo facade overlooking the tree-lined Praza Maior (Plaza Mayor). There's a good view of the Río Miño valley from the Parque Rosalía de Castro,
outside the Roman walls near the cathedral, which is a mixture of Romanesque, Gothic, Baroque, and neoclassical styles.