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.

The tardigrade has baffled scientists for years with its ability to survive everything it has been exposed to so far — even space.

Under the premise of adopting and caring for them in loving homes, Amelia Dyer murdered between 300 and 400 babies in Victorian England.

From Elisa Lam to Richard Ramirez, the Cecil Hotel's history has been filled with bizarre horrors since it opened in 1927.

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.

The creepy story of Robert the Doll began when he was gifted to a young boy named Robert Eugene Otto in 1904 — and he's brought horror to Key West ever since.

As her last wish, Evelyn McHale didn't want anyone to see her body, but the photo of her death has lived on for decades as "the most beautiful suicide."

Authorities found a map in Robert Hansen's Anchorage home marked with tiny "X" symbols, showing where the so-called "Butcher Baker" killed and buried his victims in the wilderness.

King Ludwig II of Bavaria spent years dreaming up Germany's Neuschwanstein Castle, the model Walt Disney would later use for "Sleeping Beauty."

The balut egg is one of the more controversial foods, but if you can get past the tiny duck face inside, it could potentially increase your manliness.