Leap Castle in Ireland is said to be the world's most haunted, but all of these fortresses are purportedly home to ghosts ranging from malevolent Druid spirits to the young woman who inspired The Ring.

A literally heartless insect known as the "murder hornet" that can sting you repeatedly and land you in the hospital? It's not a nightmare — it's the Asian Giant Hornet.

On January 30, 1972, British soldiers brutally killed 13 unarmed civilians who were participating in a civil rights march in the Northern Irish city of Derry.

Marilyn Monroe's mother Gladys Pearl Baker was a single woman living with paranoid schizophrenia when she gave birth to the future icon, and their relationship remained strained until Monroe's sudden death.

At least two people died trying to reach the infamous Into The Wild bus on Alaska's Stampede Trail after hiker Chris McCandless died there in 1992.

The golden-colored silk of the banana spider — the aptly named golden silk orb-weaver — is stronger than steel and tougher than Kevlar.

Dutch Christmas traditions have long included a blackface servant known as Zwarte Piet, but anti-racism activists are now calling for this to end.

From the crew's last days of training to the moment the Space Shuttle Challenger exploded, see one of the worst disasters in American aerospace history as it happened.

Robert Johnson was a guitar virtuoso who played across the South in the early 1900s, but much of his life remains a mystery, leading fans to fill in the blanks with outlandish myths.

On February 21, 1965, Malcolm X was killed while speaking at the Audubon Ballroom in New York City. To this day, the truth about his assassination remains unresolved.