Built by a pre-Islamic society in what is now Saudi Arabia, Hegra was the second city of the Nabataean kingdom.

Cleopatra's perfume was so legendary that Marc Antony could supposedly smell the queen from miles away before her ships even arrived on the shores of his kingdom.

Scientist Pascal Cotte scoured 1,650 high-tech camera images over the course of 15 years to uncover the sketch.

Rey Rivera was just 32 years old when he vanished without a trace on May 16, 2006. A week later, he was found dead in Baltimore's Belvedere Hotel.

Although he was an Irish tailor for the Redcoats, Hercules Mulligan was also a secret member of the Sons of Liberty — and the perfect Patriot spy during the American Revolution.

Racism, economic decline, and violence left the city of Gary, Indiana in ruins in the 1970s — and it hasn't recovered since.

"The idea of going to a museum and coming away having heard a voice from 3,000 years ago is the sort of thing people might well remember for a long time."

The young fighter was originally misidentified as male after she was first excavated in 1988. Now, modern scientific techniques have revealed her true identity as an Amazon warrior.

The lava-like blob of radioactive materials known as the Elephant's Foot was left behind after the Chernobyl nuclear disaster near Pripyat, Ukraine in 1986.

While cleaning the former school's grounds, 27 "anomalies" consistent with the characteristics of unmarked graves were discovered.

Hollywood's premier celebrity hairstylist who worked with the brightest stars of the 1960s, Jay Sebring was killed by the Manson Family on August 9, 1969.