Throughout history, there have been hundreds of events and phenomena that just can't be explained. From Area 51 to vanishing planes, these are the most mysterious occurrences in history...
Bermuda Triangle
Over the course of half a century, airplanes and ships have vanished inside a triangular portion of the North Atlantic Ocean known as the Bermuda Triangle. In 1964, Vincent Gaddis wrote "The Deadly Bermuda Triangle," which asserted that the disappearances were all strangely connected to the region.