Around 1 p.m. on October 20, 1967, Bob Gimlin and Roger Patterson saw a seven-foot creature in Bluff Creek, California — and caught their encounter on film.

Neighbors described the Grim Sleeper as "friendly and quiet," but inside Lonnie Franklin's home were hundreds of photos of the women he had brutalized and murdered.

In an incident known as the Phoenix Lights, hundreds in Arizona and Nevada witnessed a fireball go across the sky followed by the appearance of a V-shaped craft.

From early 1900s attacks in the Pacific Northwest to the most recent Sasquatch sightings, these close encounters with Bigfoot will send chills up your spine.

The trove of Titanic artifacts headed to auction all belonged to fifth officer Harold G. Lowe — who saved dozens of lives on that ice-cold night in the Atlantic.

Flintlock bullets were found buried alongside the victims, suggesting they were shot to end their suffering — or as punishment for breaking the rules during the epidemic.

Advanced technology has detected the sketch of a Leonardo Da Vinci masterpiece hidden beneath the finished product as well as the artist's own handprints.

A study analyzing fish-heavy fatty acids discovered in pottery shards has shed new light on our understanding of the southeastern European diet in the Neolithic Age.

The altar was found in the ancient Graeco-Roman city of Patara and is shedding invaluable light on the ancient Greek religious practices of its time.

The century-old grenade was still functional and Hong Kong police had to quickly detonate the device in an abandoned alley.