Before your first visit, preferably in the morning to take full advantage of the first day, jot down your surname, first name and the day's date on the back of your pass (no deletions or alterations): your pass will then be activated for 2, 4 or 6 consecutive days.
On producing your pass at the checkpoints, you will not only gain free entry, but you will also avoid the queues at the cash desk.
Watch the video on how to use your pass :
Walk in the footsteps of inventors and adventurers of progress, in search of a unique scientific and technical heritage...
