The Bermuda Triangle, located in the western part of the North Atlantic Ocean, is infamous for the disappearance of numerous aircraft and ships under mysterious circumstances.
In 1959, nine experienced hikers died under mysterious circumstances in the Ural Mountains of Russia. The cause of their deaths remains unknown.
In 1587, a group of English settlers established the Roanoke Colony in present-day North Carolina. However, when a supply ship returned in 1590, the entire colony disappeared without a trace.
In 1888, a serial killer known as Jack the Ripper terrorized the Whitechapel district of London. The true identity of Jack the Ripper has never been conclusively determined.
In 1937, pioneer aviator Amelia Earhart and her navigator Fred Noonan disappeared while attempting to fly around the world, unknown to this day.
In 1948, an unidentified man was found dead in Somerton Beach, Australia. The man's identity and the circumstances of his death remain a mystery.
In 1977, the Big Ear radio telescope in Ohio picked up a strong narrowband radio signal from space that lasted for 72 seconds. The origin of the signal remains unidentified.
In 1872, the merchant ship Mary Celeste was discovered adrift in the Atlantic Ocean with no crew on board. But the fate of the crew and their reason for abandoning the vessel remain unknown.
The Voynich Manuscript is a mysterious book filled with illustrations and writings in an unknown script. It dates back to the 15th century and has confounded scholars.
In the late 1960s and early 1970s, the Zodiac Killer terrorized Northern California, sending cryptic letters to the media. The killer's true identity and the meaning of the coded messages remain unsolved.