At 8 feet, 11 inches tall, Robert Pershing Wadlow was the tallest man in the world. But sadly, this "gentle giant" didn't live long.

On the southern leg of the P.T. Barnum's tour, Anna Haining Swan would meet Martin Van Buren Bates. Soon after, they would enter the record books as the world's tallest couple.

Marco Siffredi was a French snowboarder and mountaineer who had climbed Mount Everest before. But his determination to find the "Holy Grail" of routes proved to be his undoing.

The largest nuclear bomb ever created, Tsar Bomba was detonated by the Soviet Union above the Arctic archipelago of Novaya Zemlya on October 31, 1961.

A precursor to the modern American foster care system, the Orphan Train Movement was designed to give impoverished children in cities a better future. Instead, many ended up in the arms of poorly-vetted families seeking free labor.

He became one of the most decorated pigeons of World War I.

In December 2017, August Ames tweeted about her unwillingness to work with men who appeared in gay adult films. Days later, she would take her own life.

A German serial killer active in the early 20th century, Peter Kürten tortured and killed at least nine people and attempted to kill dozens more, often by stabbing them with a pair of sharpened scissors.

As a teenager, "Lipstick Killer" William Heirens was sentenced to life in prison for a series of grisly murders he'd allegedly committed on Chicago’s North Side — but many believe he was innocent.

In the late 1910s, a mysterious serial killer known as the Axeman of New Orleans terrorized the city, breaking into homes and brutally attacking about a dozen people, often with their own axes.

After being lobotomized in 1941 at 23 years old, Rosemary Kennedy would spend the rest of her life institutionalized and isolated from her family.