I highly recommend this tour to anyone visiting Berlin but if you have an interest in architecture, history, are arty, into photography or just like something different you will just love this airport.
I took the tour on Saturday at 3pm in English. It was hard to find the booking office so try to plan ahead and contact the airport so they could email directions and the tour times. Our tour guide was fantastic he put up with a lot from us like setting off alarms and running off to take photos.
This place is huge! I found it is interesting to see the contrast between the 1930s architecture exterior and 60s interior. It’s hard to explain the feeling you get walking into the main airport with a space this size being empty, it’s like time has stood still.
The tour takes you through many empty rooms, a basketball court, an old bowling alley and endless stairways. There is also an upstairs section that has been half completed with all these metal supporting structures poking out of the walls, very cool. During the tour the history is explained starting from the 1920s to post-war and the future plans for the building and surrounding areas.
Just when I thought it was over we went down to the underground bunkers which seemed to go for miles.
My only regret is I didn't have a better camera on the day.