Might the tools and technology of ancient builders have come from distant galaxies? See more in this scene from Season 3, Episode 6, "Aliens and Ancient Engineers." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY ...

Could gold be the ultimate link between humans and aliens? See more in this scene from Season 3, Episode 4, "Aliens and Temples of Gold." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Throughout the world, ancient rites and rituals are believed to connect humans to another dimension. But just who--or what--are we communicating with? See more in this scene from Season 3, Episode 5, "Aliens and Mysterious Rituals." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, ...