The devoted mother of Adolf Hitler, Klara Hitler died of cancer in December 1907 while in the care of a Jewish doctor, leading some to speculate that this tragedy set the future dictator on his deadly path.

The fortress was specially constructed on a foggy mountainside to keep Escobar's enemies out — and not the cocaine kingpin in.

Paul Avery was a top reporter for the San Francisco Chronicle reporting on the infamous Zodiac killings. But after making a break in the case, the killer took to tormenting him with letters and cards.

From 180 to 192 C.E., Emperor Commodus ruled ancient Rome with an insatiable lust for power that brought an end to the fabled Pax Romana.

In the early 14th century, Robert the Bruce became the King of Scots and ensured his country's independence after repulsing several English invasions.

From Kenny the tiger to Otto the kitten, you've probably seen content about animals with Down syndrome. But what's the truth about their conditions?

In December 1982, Charles Scudder and his partner Joseph Odom were brutally murdered in their Corpsewood home by two acquaintances in a drug-fueled robbery gone awry.

According to Mexican legend, La Llorona is the ghost of a mother who killed her children — and causes grave misfortune to all near her.

Known as Snake Island, the viper-infested Ilha da Queimada Grande sits in the Atlantic Ocean about 90 miles off the coast of southeastern Brazil.

Jim Hutton and Freddie Mercury enjoyed seven love-filled years together before the latter died of AIDS-related complications on November 24, 1991.

The first African man to become a samurai, Yasuke certainly made a mark on feudal Japan — though much about his life remains a mystery.