Ancient Aliens

Peru is famous for its megalithic ruins, colossal geoglyphs and the Incan civilization. But could it also be a site of extraterrestrial visitation?

In 2021, the United States government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena.

Ancient Aliens is counting down the world's top ten most mysterious sites. Could these extraordinary places provide evidence of extraterrestrial visitation?

From the famous Roswell Incident to a secret military base rumored to be housing ET technology to recently released UFO videos captured by cameras on Navy fighter jets.

Mount Shasta in northern California is known as a hotbed of strange events. Could the mountain's unique geology and placement on Earth be attracting beings from other worlds?

Scientists now know that seven human-like species lived alongside Homo sapiens for thousands of years. Is it possible that we were the product of extraterrestrial experimentation?

We're counting down the top ten alien encounters, from the first reported abduction event to mass UFO sightings over New York's Hudson Valley to an incident in ancient Rome.

We're counting down the top ten alien artifacts. Objects that could provide evidence that extraterrestrials once walked among us.