Is there a hidden city in the skies? Find out what the Chinese government could be hiding in this preview to "The Hidden Empire." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full ...

The ruins of a city found at the bottom of Fuxian Lake in China raise big questions about the country's history with extra-terrestrials in this collection of scenes from "The Hidden Empire." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

15% of humans have a rare bloodtype known as Rh negative. See what experts have to say about a possible link to extraterrestrial modification of humans in this collection of scenes from "The Prototypes." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Russian astronauts encounter strange beings up in space in this collection of scenes from "Russia's Secret Files." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

You think the moon is natural, they say it was built. Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

What if our technology is alien? Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: ...

An ancient mysterious crash may be evidence of advanced technology. Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full ...

How did these 18,000 year-old remains end up with modern tools? Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full ...

Experts discuss the creation of a new element and what it means in regards to aliens in this collection of scenes from " #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes ...

Giorgio meets with an ex-cop who investigates people who have been abducted by aliens in this collection of scenes from "The Returned." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch ...

Is the Indian god Shiva really an alien? How else could the Kailasanthar Temple have been built? Learn the theories in this collection of scenes from "Shiva the Destroyer." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT ...

Found during an excavation of a shipwreck in Sicily are metal ingots over 2600 years old made up of a mysterious metal compound. Could it be orichalcum, rumored to have covered Poseidon's Temple in the lost city of Atlantis? #AncientAliens Subscribe for more from Ancient Aliens and other great ...