Rennes, city, capital of Ille-et-Vilaine département, Brittany région, western France. It is situated at the confluence of the Ille and Vilaine rivers.
Rennes, France Rennes, France The city’s name is derived from the Redones, a Celtic tribe that established its capital there. Under Roman occupation the town became the centre of communications of the province of Armorica. In the Middle Ages it vied with Nantes as capital of the dukes of Brittany. The rivalry continued when a Parliament of Brittany was created in 1551; the Parliament finally settled at Rennes 10 years later.