For all tours the number of guests is limited to 20 guests.
Please note the actual contact restrictions. For the individual tours pre-booking is mandatory, for the public tours in German there may be free places you can buy your ticket for at our front desk. For the tour with our audioguide you do not need to book upfront. Please do not forget your mouth-nose-mask.
You can pay via Paypal. For payments via direct debit ("Lastschrift") or credit card ("Kreditkarte") you do not need a paypal account. Please note that payment via direct debit does not work if you own a paypal account due to paypalʻs security restrictions.