Erected in 1980, the Georgia Guidestones monument served as both a solar calendar and a strange list of rules for a post-apocalyptic society to follow — and some people believed it was satanic.

These haunting photos of the RMS Titanic's sinking were taken immediately before and after the historic disaster on April 15, 1912.

A diary allegedly written by James Maybrick not only reveals that its author was Jack the Ripper, but contains grisly details of the Ripper murders that only the killer would know.

Though he rescued 669 children from the Holocaust in 1939, Nicholas Winton wasn't recognized until he appeared on the TV show That's Life! in 1988.

When comedian Phil Hartman was murdered by his wife Brynn on May 28, 1998, America was devastated — but his friends had seen the warning signs for years.

More than any other source, Kurt Cobain's journals reveal the music that inspired him and the problems that plagued him.

From July 1976 to August 1977, David Berkowitz roamed the streets of New York, where he shot six people at random in what's known as the "Son of Sam" killings.

With theories ranging from an avalanche to katabatic wind, researchers may have finally solved the Dyatlov Pass Incident that left nine Soviet hikers dead in February 1959.

Even after 2,200 years, the mummy of ancient Chinese noblewoman Xin Zhui a.k.a. Lady Dai remains so well-preserved that there's hair on her head and blood in her veins.

From religious extremism to child abuse to their brutal treatment of the Native Americans, the Pilgrims who built the Plymouth Colony were far more ruthless than you realized.

The English nursery rhyme "London Bridge is Falling Down" seems innocent on the surface, but some scholars believe it's a reference to immurement — the medieval punishment where a person is locked inside a room until they died.