This tour takes place in German. THIS TOUR TAKES PLACE IN GERMAN LANGUAGE! The ticket is only valid for The Virtual Tour 1 and only at the specified date and time. No exchange or redemption. A refund will only be made in case of cancellation of the tour by us. A withdrawal, credit or clearing, even of partial amounts, as well as redemption for a tour other than the one indicated above is not possible. Contents of the tour: In a "Zoom" conference, our speakers lead us through the underground air protection system »Bunker B» in the Gesundbrunnen underground station. During the Second World War, countless bunkers were built in Berlin, but rooms in the area of the underground were also converted for air protection purposes. In the Gesundbrunnen underground station, there are underground shelters for travellers and residents on several floors. After the war, the air defense system was spared from the Allied demilitarization program because the subway tunnel would have been endangered if it was detonated. The plant fell into a "sleeping beauty". In 1998 it was rediscovered and made accessible by Berliner Unterwelten e.V. In the virtual tour, a guide explains the structure of the system live with the help of 360° recordings and deals with topics such as air protection, ammunition finds and forced labor. In addition, it is available for questions from the participants. The tour takes about 55 minutes. Afterwards there will be a question-and-answer session with the guide.