The office de tourisme in the town's main car park has leaflets available in various languages detailing the route to follow, and the features to be looked at. Principal amongst them is the "Collegiale" church with the relics of St Leonard (Patron Saint of prisoners, and also said to "cure" barren women!). Also the former house (now a museum) of scientist Gay-Lussac. Various other old buildings. On the outskirts of town, the Historail (railway!) museum. Address: O.T.S.I., place du champ de marsDirections: It's a small town (about 5000 population). Nowhere's more than 5 minutes apart.