1. The city is said to be haunted by the ghost of the witch La Corrèze, who was burned at the stake in 1590.
2. In 1635, the city was the site of a famous duel between the Marquis de Rohan and the Duke of Montbazon.
3. Legend has it that the city was founded by a giant named Ys, who threw a large stone into the river.
4. In 1817, the city was the scene of the famous “Rennes Riot”, when workers protested against the government’s attempts to control wages and working conditions.
5. The city is also known for its underground passages, which are said to be the remains of an ancient Roman road.