Ancient Aliens

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

It is one of the greatest mysteries of the prehistoric world: why did people on nearly every continent erect giant standing stones?

Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. Why did early humans to rebuild in the same places?

Across the globe, high-ranking government officials are openly talking about Unidentified Aerial Phenomena. But why now?

Could descriptions of the Ark's incredible power reveal that it was a highly advanced technological device?

In the traditions of native peoples across North America are stories of the Star Ancestors--powerful beings who descended to Earth in the distant past.

Since 2017, the Navy has been releasing photos and videos of Unidentified Aerial Phenomena. Could these objects represent alien craft?

Millions of people around the world have reported encountering shadowy entities who instill fear, shortness of breath, and even paralysis.

Throughout the ancient world, tales were told of fire-breathing dragons. Is it possible that they were visitors from other worlds?

If extraterrestrials have come to Earth from lightyears away, could they be capable of bending both time and space?

Ancient Aliens has traveled to many mysterious sites. Now, Giorgio Tsoukalos takes a look back at some of the most incredible structures we've visited all over the world.

Giorgio Tsoukalos takes a look back at the most extraordinary encounters that, as far as he's concerned, provide evidence of an extraterrestrial presence on Earth.

Giorgio Tsoukalos takes a look back at the incredible hieroglyphs, petroglyphs, and geoglyphs that he believes tell a worldwide story--of alien visitation.

Giorgio Tsoukalos takes a look back at the most compelling investigations of all, and events that he believes represent real encounters with extraterrestrial visitors.

Giorgio Tsoukalos takes a look back at the most mysterious artifacts from all over the globe - artifacts that he believes provide undeniable proof of extraterrestrial contact.

Giorgio Tsoukalos takes a look back at the most incredible evidence ever uncovered that could offer definitive proof that we are not alone in the universe.

In Ireland, the notion of the fairy folk originates from stories of powerful shining beings who came down from the sky.

Ancient cultures around the world often referred to the gods as the "Immortals" - but could they have encountered extraterrestrial beings that had achieved eternal life?

In the ancient text, "The Zohar," there is a passage that describes hidden realms of Earth--each of which is said to be populated by both human and non-human intelligence.

A woman who claimed to be the reincarnation of an ancient Egyptian priestess accurately located countless structures and artifacts in the Nile Valley. Could it be true?