Orange, In the Rhône Valley in ProvenceFounded in 40 BC by the veterans of the Second Gallic Legion of Caesar,Orange is a Roman colony named Arausio. It is experiencing a great boom under the reign of the Emperor Augustus during which the theatre is erected. The city is built during centuries of monuments typical of Roman urban civilization: The ancient theatre, the Arc-de-Triomphe, the temples, the hemicycle, the wall of enclosure, the aqueduct,... Vaison-La-Romane between the Rhone Valley and the Mont VentouxAt the arrival of the Romans, Vaison is the capital of the Voconces, a people of Celtic origin ally of the Romans. Romanization of the region is all the easier as the city of "Vasio" enjoys the status of a federated city that gives it many advantages and a privileged relationship with Rome, which makes it one of the richest cities of the Narbonese Gaul.