The tunnel leading to the bunker is 100 yards long and goes to R4, the bottom third floor.
Right after the Cold War ended in 1992, the bunker was no longer needed and the property was sold privately at a closed auction.
Signs are posted throughout the area directing tourists to the not-so-secret, secret bunker.
Today, horrifying mannequins take the place of government officials hiding out from the Soviet nuclear apocalypse.
When not filled with tourists, the bunker is used as a filming location. An episode of the British reality TV series "The Murder Game" was filmed there, as well as an episode of "New Tricks," a British comedy television show on BBC.