Legends from around the world speak of sacred entryways to the land of the gods. Gates that allowed instant passage not just beyond the confines of Earth, but beyond space and time. See more in Season 7, Episode 1, "Aliens and Stargates." #AncientAliens Watch all new episodes of Ancient ...

The U.S. government finally admits to the existence of UFOs. See more in this clip from "Aliens and the United States." #AncientAliens Watch all new episodes of Ancient Aliens, Friday, January 6th, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. Subscribe ...