A sketch by German artist Hans Holbein the Younger created sometime in the 1530s and known only as the "Unidentified Woman" may in fact be an extremely rare portrait of Anne Boleyn.

Twice the length of today's largest great white sharks, Tylosaurus rex could reach up to 43 feet long — making it even bigger than Tyrannosaurus rex.

Found at the Diriyah archaeological site in Saudi Arabia’s Al–Qassim region, this enormous collection features expertly crafted pendants, discs, and beads adorned with floral patterns and multicolored stones.

On January 16, 1997, Ennis Cosby pulled his car over to the side of a Los Angeles interstate to change a tire and was brutally gunned down by Mikhail Markhasev during a failed robbery.

On the surface, these popular nursery rhymes may seem lighthearted, but their origin stories might be far darker than you ever imagined.

In 1989, Lyle and Erik Menendez brutally murdered their parents in their Beverly Hills home. Then, they made shocking allegations of abuse in court.

Uncovered in a previously blocked-off area of Crno Jezero cave, this 2,300-year-old sanctuary may have been used to worship Dionysus, the ancient Greek god of wine, theater, and "ritual madness."

The expression "rule of thumb" has innocuous origins — but many believe that it derives from 18th-century laws about husbands being allowed to beat their wives.

For 500 years, generation after generation of the local Barkindji people would ritualistically "feed" the dingo by regularly placing offerings of mussel shells on its grave.

Found at a burial ground in the Astrakhan region, this sabre measures almost four feet long and dates back to the second half of the 13th century.

Elvis Presley was a 24-year-old soldier stationed in Germany when he started dating Priscilla Beaulieu, who was a freshman in high school at the time.

First caught on camera in 2007, the Fresno Nightcrawler looks like a pair of pants that can move on its own.