On the border of the Rhône river, the archaeological site of Saint-Romain-en-Gal is home to the Gallo-Roman remains of an ancient district of Vienne. Its museum recounts the ancient history of Vienne and boasts a magnificent collection of mosaics. Saint-Romain-en-Gal is one of the largest Gallo-Roman sites in France.
The classified site contains more than 3 hectares, where are located the remains of residential and commercial area built between 1st and 4th centuries AD.
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.