All I can say is WOW! This tour was amazing. We arrived early at the Gesundbrunnen underground station and when you walk inside there is a tour office where you exchange your voucher prior to the tour. The tour was incredible and many of the facilities and artifacts we saw were memorable. They do not allow you to take pictures which was a shame, my husband was so anxious to do so! Among the most memorable parts was the room with the glowing walls. This is a definite must for anyone truly interested in the history of the average German citizen and the challenges faced when taking refuge in these underground shelters. My only complaint about this tour has more to do with the neighborhood. We tried to get a taxi back to our hotel in Potsdamer Platz afterwards because we were running behind and didn't have enough time to change trains. In retrospect, we should have just taken the train because it was extremely difficult to locate a taxi in the area. As an aside, there is a remaining German bunker located in the park across the street from this train station and it is worth a visit - if you can find it. We had some trouble, but a local pointed us up the hill in the right direction. We would recommend this tour to others.

This is a thoroughly absorbing hour-and-a-half tour of Berlin's underground, including a World War 2 air rid shelter. The tour guide was excellent and very informative. The tour party was encouraged to take part in questions and answers and made to feel included. We were sorry when it came to an end.

A truly fascinating tour. My only disappointment was that photos could not be taken.

Loved it. Only negative is you are not allowed to take pictures.

The tour guide spoke excellent English and was a wealth of information regarding the Berlin bunkers. I would thoroughly recommend this tour to anyone visiting Berlin. Well worth the money.