We can only guarantee access with an online ticket for a booked time slot or a time slot reservation for other tickets. The time slot is already included in the online ticket, no further reservation is necessary. All other ticket types require a time slot reservation.

As part of the precautions to contain Covid-19, we have capacity limits which we ensure by pre-booking. If a day can no longer be booked, we have no more capacity on that day. In this case please select another day for your visit.