• Book online ahead, since entry is by timed tour only and late arrivals can't join; arrive 30 minutes early for lockers
• Tours run in German, with English and other languages on request by email to the booking line before you book
• About €5 cash per person for a drink in the DunkelBar; phones, watches and anything that glows go in a locker

Dialogmuseum runs Dialog im Dunkeln, a tour through four rooms with no light. Groups of up to eight follow a blind or visually impaired guide, finding their way with a white cane, their hands and their ears. The last room is the DunkelBar, where the group orders a drink in the dark and talks with the guide. Anyone can leave at any point, though there is no way back in.