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.

After developing the V-2 rocket for the Nazis, Wernher von Braun was recruited by America at the end of World War II where he designed the spacecraft that took NASA to the moon in 1969.

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

After hallucinogenics researcher Richard Alpert was fired from Harvard for drugging his students, he reinvented himself as a spiritual leader named Ram Dass and became an icon of the counterculture.

Junko Furuta was just 17 years old when she was raped, beaten, and killed by four teenage boys in 1980s Japan.

After suffering from mysterious hallucinations for four days straight, Edgar Allan Poe died of unknown causes in Baltimore at age 40 on October 7, 1849.

After his zoning petition was repeatedly dismissed, Marvin Heemeyer decided to modify a bulldozer into a lethal "killdozer" and go on a rampage in Granby, Colorado.

Also known as the "Mountain of Seven Colors," Vinicunca is a 17,000-foot tall mountain that attracts thousands of visitors a day — and it's easy to see why.

Chris McCandless was an ambitious young man who insisted on trekking into the wilds of Alaska on his own. A few months later, he was found dead. To date, the circumstances surrounding his death remain unclear.

One of the worst serial killers in American history, John Wayne Gacy performed as "Pogo the Clown" by day and murdered young men and boys by night.

Gypsy Rose Blanchard was kept prisoner by her mother Dee Dee for 20 years — then she and her boyfriend Nicholas Godejohn took bloody revenge inside their Springfield, Missouri home.