It took a century for scientists to figure out the reason for Blood Falls' crimson water — and how it flows out of the glacier.

About 60 miles away from Anchorage, at the head of the Passage Canal, lies Whittier, a town where nearly the entire population lives in a single building called Begich Towers.

Neurologist Walter Freeman introduced the lobotomy to the United States in 1936, but over the next three decades, the controversial procedure left an estimated 490 of his patients dead and permanently disabled many others.

Located in the middle of the South Atlantic Ocean, Tristan da Cunha is 1,600 miles from the nearest continental landmass and can only be reached by a six-day ship journey — but the island has been home to a small group of residents since the early 1800s.

Irma Grese was one of the cruelest female war criminals during the Holocaust, and she was executed for her crimes in 1945 at the age of 22.

William Bonin was convicted of raping and killing 14 boys and young men ranging in age from 12 to 19 between 1979 and 1980, but he later claimed that he'd actually murdered more than 20.

In World War II Germany, soldiers, homemakers, and even Adolf Hitler himself were all hooked on Pervitin.

Ted Bundy described himself as "the most cold-hearted son of a bitch you'll ever meet." His crimes certainly prove that statement true.

Also known as shamans or medicine men, witch doctors can be found from Peru to China to South Africa — but they're not at all what you may think.

Popularly known as "The Shining Hotel," the Stanley Hotel in Estes Park, Colorado, has a haunting history that goes back to the early 1900s.

Erected in 1980, the Georgia Guidestones monument served as both a solar calendar and a strange list of rules for a post-apocalyptic society to follow — and some people believed it was satanic.