It is a story told in more than twelve hundred cultures around the world--the gods sent a great flood to wipe out humanity for its disobedient and wicked ways. Do these numerous creation myths point to an actual deluge, one that engulfed the world and spared only a chosen few? See more in ...

Check out Alaska's most mysterious events. See more in this Ancient Aliens compilation. CH1 - 0:00 - The Top Ten Hidden Alien Bases CH2 - 4:48 - The Mysteries of Alaska CH3 - 10:36 - Hidden Pyramids CH4 - 14:07 - The Mysteries of Alaska Watch full episodes and stay up to date on all of your ...

Off the coast of Chile there’s an island filled with mysterious monolithic structures that hold secret powers. See more in this clip from Season 21, Episode 2, "The Top Ten Mysterious Monoliths." Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite ...

Inexplicably, megalithic structures found on different continents are strikingly similar, and the cutting and moving of the massive stones used to build these magnificent feats would be a struggle for modern day machinery, let alone ancient man. Evidence suggests that an ancient mountaintop ...

Researchers discover a massive underground city that hold hundreds of people. See more in Season 21, Episode 1, "The Top Ten Extraordinary Discoveries." Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Who are the beings with big heads and giant eyes that seem to have been visiting our planet for millennia? Known by researchers as the "greys," these mysterious beings have been depicted in rock-art and carved stone figures throughout the ages and all over the world. See more in Season 2, ...

Check out these out of this world alien theories. See more in this Ancient Aliens marathon. Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other ...

Check out these mysterious moon theories. See more in this Ancient Aliens compilation. Ch1 - 0:00 Ch2 - 17:08 Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

These UFO sightings remain unsolved mysteries for the most part. See more in this compilation from The Proof Is Out There 00:00 Montreal Lights 05:55 Italian Countryside 11:16 Oklahoma 16:47 UFO Over New Mexico Watch all new episodes of The Proof Is Out There, Fridays at 10/9c, and stay up to ...

Check out these alien theories from the stars. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for ...

Check out these out of this world theories! See more in this Ancient Aliens Marathon. Watch all new episodes Fridays 9/8c; Stream Next Day, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

Check out these 6 rare UFO sightings covered up by the government, in this The Proof Is Out There compilation. Chapters: 0:00 - Glowing Orbs in the Gulf of Mexico? 05:10 - Pyramid-Shaped UFOs over the Pacific Ocean 10:08 - Two Silver Spinning Discs across Montana Sky 15:45 - Unknown Aircraft ...