On the outskirts of Isle-sur-le-Doubs, the river splits into two arms, making part of the town an island, hence its name. With approximately 3,000 inhabitants, Isle-sur-le-Doubs offers campsites, restaurants and shops in a very pleasant setting.
The Mont Bart fort is a 19th century fortification which dominates the Doubs and Allan valleys. The fort is part of the Séré de Rivières fortification system, built to protect …