One of Adolf Hitler's favorite commandos, Otto Skorzeny first became internationally known for rescuing Benito Mussolini from prison during World War II — but Skorzeny's life would take many twists and turns after the war was over.

Known as the "Swiss Machine," mountain climber Ueli Steck fell from the Nuptse peak in the Everest massif on April 30, 2017, leaving him dead at the age of just 40.

After World War 2 ended, Klaus Barbie pretended to be homeless until he was recruited by the CIA to spy in Bolivia and fight against communism.

In March 1898, two lions began killing and feasting upon construction workers who were building a railway bridge in Kenya's Tsavo region, resulting in up to 135 deaths before these fearsome beasts were finally killed nine months later.

In the years leading up to World War II, Adolf Hitler designed a series of massive buildings and monuments that he planned to erect in Berlin after defeating the Allies, making the city the "capital of the world."

A Colombian-German drug lord, Carlos Lehder helped Pablo Escobar found the Medellín Cartel — but their alliance wouldn't last forever.

Massive geoglyphs etched into the coastal pampa of southern Peru, the Nazca Lines were carved starting 2,500 years ago — and remain mysterious to this day.

Robert Ford became forever known as a "dirty little coward" after betraying and killing his friend, outlaw Jesse James, in St. Joseph, Missouri on April 3, 1882.

Johnny Ringo was found shot in the head near Tombstone, Arizona on July 13, 1882 — not long after making enemies with Doc Holliday and Wyatt Earp.

Before Ringo Starr, the Beatles toured with drummer Pete Best, but differences led to his ousting just before the band reached worldwide success.