See Berlin's underground bunkers

The underground Cold War bunkers in Berlin have been open to the public since 1997.

Bunker tours detail the history of the construction of the bunkers, particularly after the construction of the Berlin Wall in the early 1960s.

The first bunker dates back to WWII, is beneath the Blochplatz and is part of the Gesundbrunnen underground station.

Some underground stations in the capital were known as "ghost stations" because they were closed to the public, being under the streets of East Berlin, but were used by transit lines.

Tours also outline how effective such shelters would have been in the case of actual nuclear fallout.

Pankstrasse was a modern air raid shelter which was opened during 1977 and would enable almost 3,500 people to be protected and sealed in by big steel gas locks.

Housed inside the shelters were toilets, triple bunk beds, pipes and a medical labour room for pregnant women.

Tours are run by the Berliner Underwelten society and take place every Saturday.