Since 1997 this non-profit association has explored Berlin's bunkers and tunnels. Its "Dark Worlds" tour goes into a WWII air-raid bunker under Gesundbrunnen station; other tours climb the Humboldthain flak tower ruin or cover Cold War bunkers and Wall escape tunnels.
- Address
- Brunnenstraße 105, 13355 Berlin
- Hours
- Guided tours only, by online ticket; info and book shop daily 10:00-15:30
- Price
- Public tours EUR 18, reduced EUR 13, about 90 minutes (berliner-unterwelten.de, 2026)
- Price level
- €€
Details can change. Check hours and prices before you go.
Good to know
- Tickets go on sale up to 30 days ahead online and are non-refundable.
- "Dark Worlds" is not for children under 7; the flak tower tour is 18+ and pauses November to April.
- Meeting point for most tours: Brunnenstrasse 105, south exit of U-Bahn Gesundbrunnen.