Aix-en-provence, Romanesque arch in the ancient Cathedral of St. Sauveur, 1103. " SAID to have been built on part of the Temple of Apollo in the first settlement of the Romans in Gaul" Macgibbon. "Aix is another of the troubador towns. The cathedral and other buildings are strewn with relics of every style, from Corinthian days down to architecture's latest gasp."