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.

Turkmenistan's "Door to Hell," also called the Darvaza gas crater, is fueled by a reserve of methane gas below the surface — and scientists have no idea how long it will take to burn out.

Newton Knight led a small army of fugitive slaves and Confederate deserters to create the Free State of Jones.

Known for both eating his own feces and mutilating himself on stage, GG Allin was perhaps the most shocking musician in history — until his dramatic death at just 36 in 1993.