They are so secretive that most people do not even suspect anything of their existence: In the world there are some places that you will never see as a mortal. A selection of the top secret places of the planet.

One could almost think that all corners of this earth have long been developed touristically. But there are also places that no normal human being will ever be allowed to enter - many of whom did not even know they existed. These are places that are secret because they are supposed to hold secrets. And with so much secrecy, it's no wonder that legends form and conspiracy theorists sometimes find bizarre answers to the unanswered questions.

1. Cave of Lascaux, France

This treasure of human history was discovered in 1940 and contains some of the oldest cave paintings ever. As early as 1963, however, the cave was closed to visitors, because the images began to decompose daily by the exhaled CO2 of up to 1500 visitors. Only just 200 meters from the entrance of the original cave but Lascaux II was opened, a detailed replication of the real cave, in which all murals are represented, and with interactive elements also be explained.

2. Iron Mountain, Pennsylvania, USA

And another high-security bunker, but no seeds are kept in it, but data - and according to "The Richest" the most important data of some of the largest companies in the world. 22 stories deep in an old mine, for example, store data from Bill Gates, but also government agencies and music labels, who keep here the master tapes of their biggest stars. The place is named after the same name Iron Mountain, which operates such bunkers all over the world. There is also such a depot in Germany, in Hamburg. There, the data is stored behind a 750-kilogram steel door, which would survive even the attack with a bazooka.

3. Varosha, Cyprus, Greece

Once this city was a tourist paradise, on the beach even actor legend Elizabeth Taylor sunned - until 1974 Turkish troops invaded the northern part of the island. More than 100 hotels and apartment houses, 21 banks, 24 theaters and cinemas as well as around 3000 smaller and larger shops counted the place in its best days. Today it is widely cordoned off with barbed wire and guarded by soldiers with firing orders. The city is uninhabited until today.

4. Mount Weather, Virginia, USA

The Federal Emergency Management Agency, a kind of civil protection agency, operates this secret facility. For years, media such as "NBC Washington" have reported that in the event of a nuclear war, the most important people could be evacuated and thus saved. The existence of the plant became known only in 1974, after a plane crash in the immediate vicinity Federal agents kept the media from the image coverage. Even in the nearby town of Berryville most residents would not know, according to the article to this day, what actually happened in Mount Weather. However, with the onset of a major natural disaster, Mount Weather could play a major role in rescuing key US personalities.

5. Fort Knox, Kentucky, USA

Not only the US's gold reserves are to be stored here, but also important documents such as the original Declaration of Independence or the Magna Carta. Legendary was the bunker by the James Bond film "Goldfinger", in which a villain of the same name plans to steal said gold. "The World" also referred to Fort Knox as the best guarded place in the country. No wonder, since well over 200,000 gold bars are stored here, behind a 22-ton steel door, which could allegedly resist any demolition. The site is also secured by barbed wire and minefields - so nobody really comes in (unauthorized).