though she allows that the case will probably never be definitively solved. This article was originally published on mentalfloss.com as 15 of History’s Greatest Mysteries.

From the truth of Aerea Targaryen's death to the origins of the oily black stone, these are the biggest lingering mysteries ...

South west of Cairo, deep in Egypt’s Western Desert, there lie treasures even more ancient than the pharaohs’ tombs — and travellers can visit them to see one of the great mysteries of evolution ...

Please verify your email address. Like any good fantasy universe, Guild Wars 2 has presented some excellent mysteries over the years, as well as answers to burning questions. Case in point ...

Grand Theft Auto 5's Mount Chiliad easter egg has become one of the biggest mysteries in gaming ... one of the biggest easter eggs in gaming history. While fans have dedicated years to cracking ...

The Tower of London has played many important roles throughout history. Not only has it ... But, perhaps one of the tower's biggest mysteries is the story of 'the Princes in the Tower' and exactly ...

Gardner Museum Robbery: In 1990, thieves stole half a billion dollars in masterpieces from the Isabella Stewart Gardner Museum. Who orchestrated the infamous heist ...