Huge, very interesting fortress with a great view. Bring plenty of time and go into the cellar. Attention! The tickets have to be bought at the bottom of the mountain. There is a kiosk right by the fortress.
The museum can only be visited as part of a guided tour, which however gives a very interesting insight into the life of Hortense and Eugénie (mother and wife of Napoléon III). Admission: 15 francs.
A ruin from the early Middle Ages, nothing unusual, but still worth a little detour if you walk past it on the hiking trail. (The ruin is about 100 meters …