For conservational purposes, the number of visitors to each museum is limited. We advise you reserving tickets for your group (10 people or more) well in advance to ensure admission on your preferred date and to avoid waiting. This applies to independent and guided tours alike. Guided tours are only available for groups if booked at the visitor information centre. The visitor information centre will accept bookings in writing no less than 10 opening days before the date of preferred visit. You will receive a booking confirmation which you must bring with you on the day. Your booking is subject to the general terms and conditions (see Downloads).