Just off the coast of Iceland lies a volcanic island called Surtsey. People are prohibited from visiting the island due to its scientific significance
According to the Book of Exodus, the Ark of the Covenant, also called the Ark of the Testimony, is a gold-covered wooden chest that contains the two stone tablets of the Ten Commandments.
The government is extremely secretive about the area, which has led to a slew of theories about what the area is really used for—many believe it contains aliens.
During WWII, the depository safeguarded the U.S. Declaration of Independence as well as the U.S. Constitution, the Magna Carta, and other important historical documents.
Room 39 is thought to be situated inside a ruling Workers' Party building in Pyongyang, not far from one of the North Korean leader's residences.
Founded in 1693, White Gentleman's Club is the oldest gentleman's club in London and is widely regarded as the most exclusive club in the city.
There are other security measures in place to keep out unwanted guests, however, and Google refuses to disclose what they are.
The system was built, or at least started, during the time of Joseph Stalin's rule and was given the code name "D-6" by the KGB.