Now on display in the British Museum, the Rosetta Stone is a granite tablet from 196 B.C.E. inscribed with a decree in Egyptian hieroglyphics, ancient Greek, and Demotic script.

Leah, Kate, and Maggie Fox carried out an elaborate prank for 40 years, convincing audiences that they could communicate with spirits.

Known as the "father of photojournalism," Mathew Brady helped take 10,000 pictures of the Civil War — and captured the reality of America's bloodiest conflict.

John Barber died of tuberculosis in 19th-century Connecticut, and when townspeople remained sick thereafter, superstitious locals claimed he was a vampire who rose from the grave to spread his illness.

Whether it was serial killers prowling the streets or parents killing their children in their own homes, these are some of the most disturbing murders ever committed on Halloween.

Elisabeth R. and her cohorts allegedly believe that the Treaty of Versailles is invalid and that Germany is still a monarchy.

From a 19-year-old who stabbed his landlord because the "devil made him do it" to the woman who underwent a series of exorcisms across 23 days, these are nine of the most harrowing cases of alleged demonic possession in history.

Researchers found the ancient star map in the medieval manuscript Codex Climaci Rescriptus where someone had scraped off the original ink in order to reuse the parchment.

The bones found in the Duvensee bog of the Schleswig-Holstein region provide evidence of Germany's oldest known burial.

Though James "Buffalo Jim" Barrier's 2008 death was declared accidental and likely related to cocaine use, his family is convinced that he was murdered by his enemies.

Police say Rorie Susan Woods could have faced manslaughter charges if anyone had died during the unusual attack.