Puma Punku in Bolivia features some of the largest stone blocks on Earth, each carved with incredible precision. See more in this scene from Season 20, Episode 20, "Resurrecting Puma Punku." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite ...

Watch these unbelievable mysteries that took place in Peru, in this compilation from Ancient Aliens. 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 http://history.com/schedule. #AncientAliens ...

Did aliens really help to shape our history? See more in this two hour marathon from Ancient Aliens. 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 http://history.com/schedule. #AncientAliens ...

Has NASA found definitive signs of life on Mars that they're intentionally keeping from the public? See more in this compilation from Ancient Aliens. 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 ...

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. See more in this scene from Season 20, Episode 18, "The Linda Moulton Howe Files." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all ...

Enjoy these cameos of the Lagina brothers in this compilation from Ancient Aliens. 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 http://history.com/schedule. #AncientAliens Subscribe for more ...

Throughout history, advances in technology have led to the development of powerful weapons--each more deadly than the last. See more in Season 2, Episode 13, "Alien Weapons." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The ...

Is it possible that the perfectly carved stone boxes--each weighing more than 70 tons--were designed not by humans... but by otherworldly visitors? See more in this scene from Season 20, Episode 17, "Egypt's Giant Tombs." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up ...

Will anyone be able to solve the mystery of the Bermuda Triangle? See more in this compilation from Ancient Aliens. 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 http://history.com/schedule. ...

Ancient Astronaut Theorists believe humans didn't evolve on earth. See more in this clip from Aliens and Human Evolution. 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 http://history.com/schedule. ...

In 2019, millions responded to an internet post advocating to storm the gates of the world's most top-secret military installation--Area 51. See more in Season 14, Episode 20, "The Storming of Area 51." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of ...

Ancient Astronaut Theorists proposed a notion that the human race originated on Mars, and our journeys into space could be leading us towards a return to our ancestral homeland, in this clip from Season 16, "The Space Travelers." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and ...