There is a huge number of unsolved mysteries in the world, from them legends are made and conspiracy theories are built. We will tell you about some of them.

Genghis Khan's grave

The great khan who built the great power of Central Asia - and yet it is still unknown where he is buried. In the mound of the deceased traditionally put what may be useful to him in the other world, so Genghis Khan's tomb should be filled with gold and other treasures, but no one has found it yet.

There are rumors that he is buried near the river Omon. But those who participated in the process of Genghis Khan's burial were killed, so there are still no reliable sources about the location of the tomb.

The prisoner in the iron mask

There was a mysterious man in prison during the reign of Louis XIV, whose identity has not been revealed to this day. He wore a mask made of velvet, but writers and other creators spread rumors that it was iron.

The prisoner lived in solitude for 30 years, occasionally allowed to walk, but only when supervised by musketeers. When this mysterious prisoner died, all the furniture in his cell was burned and the walls repainted. Louis XIV took the name of this mysterious man to his grave.

Did King Arthur exist?

King Arthur is a hero of English myths who defeated Germanic tribes and created his own order of knights. But historians are not sure that such a character really existed... No objects confirming his exploits, there are no - only in the annals there are several mentions of tribal attacks, that there was such a leader named Artugn.

Some scholars say that Arthur and the knights who were part of his order, were Sarmatian mercenaries: Marcus Aurelius in the II century sent Sarmatians to serve in Britain, but from there they never returned.

Disappearance of Roanoke residents

The 112 residents of the English colony on Roanoke Island founded their village in 1587. When war broke out with Spain, they were unable to get food supplies for some time.

The next ship didn't arrive until 1590, and the people who descended on the island realized that there was no one in the village, not a soul. All 112 people had disappeared without a trace. They found only one ‘clue’ on a tree - it had ‘Croatoan’ (the name of an island nearby) scratched on it, but even there they found nothing and no one.

Who are you, D.B. Cooper?

It's a mystery many people devote their entire lives to solving. Dan Cooper is the fictitious name of a criminal who took people hostage, hijacked a plane, claimed a reward and four parachutes.

After he got it all, he took all the money with him and jumped off the plane. Who was this man who put the whole FBI on its ear in 1971 is unknown. What is clear is that he was a very successful and calculating robber.