Due to the increasing number of requests of visits, it has been decided to extend the timeframe of guided tours as follows :
- On the first sunday every month (except in November, December, January and February) : tours will start at 09:30. Last tour is to depart at 3.30 pm.
- During the summer period (July and August) : tours will be conducted on Tuesdays and Thursdays, starting at 2 pm (registered visitors by phone or email will have priority).
- No change for regular opening days (May 01 and 08, European Heritage Days by mid-September).