Vienne (French: [vjɛn] ; Arpitan: Vièna) is a town in southeastern France, located 35 kilometres (22 mi) south of Lyon, at the confluence of the Gère and the Rhône. It is the fourth-largest commune in the Isère department, of which it is a subprefecture alongside La Tour-du-Pin. Vienne was a major centre of the Roman Empire under the Latin name Vienna.
Vienne was the capital of the Allobroges, a Gallic people, before its conquest by the Romans. Transformed into a Roman colony in 47 BC under Julius Caesar, Vienne became a major urban centre, ideally located along the Rhône, then a major axis of communication. Emperor Augustus banished Herod the Great's son, the ethnarch Herod Archelaus to Vienne in 6 AD.As a Roman provincial capital, remains of Roman constructions are widespread across modern Vienne. The city was also an important early bishopric in Christian Gaul. Its most famous bishop was Avitus of Vienne. At the Council of Vienne, which was convened there in October 1311, Pope Clement V abolished the order of the Knights Templar. During the Middle Ages, Vienne was part of the Kingdom of Provence, dependent of the Holy Roman Empire; on the opposite bank of the Rhône was Kingdom of France, which made the city strategically important.The town is now a regional commercial and industrial centre, known regionally for its Saturday market. A Roman temple, circus pyramid and theatre (where the annual Jazz à Vienne is held), as well as museums (archaeological, textile industry) and notable Catholic buildings, make tourism an important part of the town's economy.