Before the Inca conquered the Chimú, the coastal Peruvian civilization built the largest mud-brick city in the world. They also partook in the ritualistic mass sacrifice of children.

Rarely found in the Southern Hemisphere, amber can preserve ancient organisms exactly as they were millions of years ago.

Even as Aileen Wuornos murdered seven people within the span of just 12 months, her girlfriend Tyria Jolene Moore stood by her before finally cooperating with the police and helping to bring the "Monster" serial killer down.

In the early morning hours of August 5, 1962, Marilyn Monroe was found dead inside her Los Angeles home of an apparent drug overdose — but suspicions of foul play have persisted ever since.

What happened to Jimmy Hoffa, Madeleine McCann, and other victims of famous missing persons cases? Explore their mysterious disappearances and the leading theories behind them.

After being caught with more than half a kilo of cocaine, Tim Allen faced life imprisonment in 1978. So he decided to make a deal — which eventually led to fame and fortune.

Before Spanish conqueror Hernán Cortés defeated Moctezuma II in 1521, the Mexica people used these sweat lodges to worship deities related to purification, lust, vice, birth, land, and water.

Famous figures like Salvador Dalí and Audrey Hepburn donned elaborate costumes, dined on green dinner rolls, and wandered through a "hellish" maze at the party hosted by Guy and Marie-Hélène de Rothschild at the Château de Ferrière outside of Paris.

From the 1969 Berkshires UFO incident to the eerie tale of Barney and Betty Hill, these alien abduction stories might even make skeptics believe that the truth is out there.

Captain Lewis Nixon III fought with the 101st Airborne Division's Easy Company alongside Major Dick Winters in historic clashes like D-Day and the Battle of the Bulge.