Berlinwalk.com · Berlin History
People book an underground tour, walk to Gesundbrunnen, and find out their tour starts somewhere else entirely. Two doors are not even in Wedding. Set the youngest person in your group and the month you are here, then read the board.
Prices, ages, doors and season taken from the operator's own tour pages. Tickets are sold online only, they appear about 30 days ahead, and there is no ticket desk at the meeting point. Which language runs on which day changes with the season, so the shop calendar is the only real timetable.
Full guide: Berliner Unterwelten, explained for visitors · Free daytime walking tour above ground: berlinwalk.com
Source and licence details for the six photographs used in the article.