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.

The segmented invertebrates known as tardigrades may be microscopic, but these indestructible "water bears" are planet Earth's most resilient creatures.

Though Frederick Valentich vanished almost 40 years ago, his unexplained disappearance still captures the attention of UFO hunters.

On April Fools’ Day 1957, BBC viewers watched a program about a "spaghetti tree" in Switzerland, and many were so convinced it was real that they wanted to grow their own.

The 1921 Tulsa Massacre left hundreds dead and caused over $1.5 million in damage while the city's famed "Black Wall Street" was destroyed — in just 24 hours.