Might an examination of Leonardo Da Vinci's masterful paintings, highly technical hand-drawn sketches, and private journals reveal knowledge of otherworldly technology and extraterrestrial beings? See more in Season 4, Episode 8, "The Da Vinci Conspiracy." Watch your favorite episodes of ...

Alaska's extensive wilderness is known for unexplained disappearances, electromagnetic anomalies, and mysterious creature sightings. Learn more in this scene from Season 2, Episode 6, "Mysteries Beneath the Ice". Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at ...

Do these ancient Chinese legends actually reference alien activity? See more in this compilation from Ancient Aliens. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other ...

There have been many reports of extraterrestrials seen in Alaska. See more in this scene from Season 2, Episode 6, "Mysteries Beneath the Ice." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

Did the early civilizations of this Italian region come into contact with extraterrestrials? See more in this scene from Season 2, Episode 7, "Alien Outposts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...

Which of these otherworldly teachers had the largest impact? See more in this compilation from Ancient Aliens. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great ...

These ancient "wheels of knowledge" can be found all across the globe. See more in this scene from Season 2, Episode 7, "Alien Outposts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

An object that appeared to be two flying saucers merged together crashes in Italy. See more in this scene from Season 2, Episode 7, "Alien Outposts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for ...

Check out these top 3 extraordinary supernatural creatures, in this compilation from Ancient Aliens. Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY ...

Are the Olympic gods really aliens? Learn more in this scene from Season 2, Episode 7, "Alien Outposts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great The ...

What is the truth behind the different texts in the bible? See more in this scene from Season 2, Episode 8, "Aliens and Mysterious Texts." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from ...

Could there really be hidden extraterrestrial bases at these landmarks? See more in this compilation from Season 20, Episode 3, "The Top Ten Hidden Alien Bases." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. #AncientAliens ...