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Japan is a land rich with ancient mysteries and it has also become known as a UFO hotspot.

Ancient Aliens

Secrets of Japan

From ancient sites like Stonehenge to the crop circle phenomenon and modern-day UFO sightings, Great Britain is a place of mysteries; exploring if throughout history this island has been a destination for extraterrestrial visitors.

Britain's UFO Files

In the age of smartphones and social media, more evidence of otherworldly activity has come to light than ever before.

Aliens in Our Midst

Examining how thousands of years ago, people all over the world described encounters with enormous, human-like beings; exploring how some archaeologists claim to have found skeletons of extraordinary size; is it possible the giants actually existed?

The Giants

All over the world, there are people who claim they have been abducted by aliens; since the 1970s, a growing number of researchers have dedicated their lives to uncover what is behind this disturbing phenomenon.

The Abduction Files

History - fascinating and exclusive programs on subjects ranging from American and world history to explorations of major events in politics, entertainment and social history.

History

Throughout the ancient world, there are depictions of mysterious figures that appear to be half human and half bird. In many cultures, they are revered as divine and have magical abilities. But could these so-called "Birdmen" have truly existed? And if so, just what were they?

The Birdman Mystery

Volcanoes have inspired countless myths and legends, but curiously, they are also major hotspots for UFO sightings; is it possible that these geological formations, which can generate great energy, are attracting otherworldly visitors?

The Volcano Factor

Dr. J. Allen Hynek was a pioneering scientist who developed smart weapons, optical tracking systems and space satellites; yet he is best known as the notorious government UFO debunker who became one of the founding fathers of ufology.

The Legacy of J. Allen Hynek

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HISTORY VAULT

Across the globe, reports of mysterious glowing orbs are on the rise; their movements frequently defy the laws of physics, and now they are even being reported near military bases, ships, and nuclear weapon facilities.

The Glowing Orb Phenomenon

The Aztecs have built a powerful and feared empire and they have claimed that they were guided by a pantheon of more than a thousand gods who came to Earth from different parts of the universe.

Mysteries of the Aztecs

"Ancient Aliens" is counting down ten mysterious mountains that are notorious for otherworldly phenomena; from a summit in Sri Lanka that is said to be a portal to other worlds and a volcano in Washington that was at the center of a UFO sighting.

The Top Ten Mysterious Mountains

Counting down ten of compelling and covert projects that study the UFO phenomenon; from clandestine government organizations to agents that silence UFO witnesses and secret programs to reverse engineer alien technology.

The Top Ten Secret Projects

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Texts, archaeology and legend contain evidence of past human-extraterrestrial contact.

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History HD reveals the power and passion of history as an inviting place where people experience history personally and connect their own lives to the great lives and events of the past.

S21 E5 | The Top Ten Secret Projects

E17 | Secrets of Japan

E15 | Britain's UFO Files

E14 | Aliens in Our Midst

E13 | The Giants

E12 | The Abduction Files

E11 | The Birdman Mystery

E10 | The Volcano Factor

E9 | The Legacy of J. Allen Hynek

E8 | The Glowing Orb Phenomenon

E7 | Mysteries of the Aztecs

E6 | The Top Ten Mysterious Mountains

E5 | The Top Ten Secret Projects