A sign reads “Federal Reserve Bank (Bundesbank) bunker Cochem – 1964-1988” prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. West Germany's Central Bank (Deutsche Bundesbank) stored some 20 billion German marks of emergency notes in two underground bunkers, one in Frankfurt the other in Cochem, between 1964-1988 during the cold war. The bunker in Cochem, in a quaint residential area, with the entrance disguised over a normal house lies thirty meters (100 feet) under the house with an impregnable concrete bunker of 8,700 square meters (93,000 square feet) containing 300 meters (1000 feet) of tunnels. The bunker could generate its own energy, and in case of a nuclear war it could shelter 175 people for 14 days. (Photo by Kai Pfaffenbach/Reuters)





West German emergency issue bank notes are pictured inside a Federal reserve bank (Bundesbank) bunker prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Tour guide Hans-Juergen Haite leads the way through a Federal reserve bank (Bundesbank) bunker prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





A tour guide displays a money sack showing it contained emergency issue bank notes worth two million German marks, inside a Federal reserve bank (Bundesbank) bunker prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Several bags and boxes which contained West German emergency issue bank notes worth 14 million German marks are seen inside a Federal reserve bank (Bundesbank) bunker prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Tour guide Hans-Juergen Haite stands inside the safe where West German emergency issue bank notes were held inside a Federal reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Communication equipment is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





A safe inventory card gives details of West German emergency issue bank notes inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Communication equipment is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





A 20 metre high spiral staircase in a tower used as an emergency exit, is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





A 20 metre high spiral staircase in a tower used as an emergency exit, is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Communication equipment is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





A door locking mechanism is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Office work space is seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Tour guide Hans-Juergen Haite opens a decontamination chamber inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Document files are seen inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





People wait outside a Federal Reserve bank (Bundesbank) bunker prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)





Tour guide Hans-Juergen Haite leaves a sleeping room inside a Federal Reserve bank (Bundesbank) bunker, prior to the bunker's official opening to the public in Cochem, Germany, March 18, 2016. (Photo by Kai Pfaffenbach/Reuters)