The site is open 7 days a week, including holidays.

1^st March / 15^th April: every day from 9am to 5pm

16^th April / 15^th October: every day from 9am to 6.30pm

16^th October / 24^th December: every day from 9am to 5pm

Ticket desk closes one hour before

The gas chamber : 10am à 12.45am, and 14pm à 17pm. Times can be modified (for informations : 03 88 47 44 67).

Closed every year from Christmas to the end of February