11. Hunt For Atlantis

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10. The Alien Code

2014 - Season 1

Ancient Astronaut Theory has existed in popular culture for nearly 50 years, asking the question whether extraterrestrials visited Earth in the remote past.

9. The Mystery of the Nazca

2014 - Season 1

Nazca remains one of the most mysterious sites on Earth. The vast desert floor is covered with hundreds of ancient geoglyphs depicting animals, human-like figures and strange geometric designs.

8. The Founding of America

2014 - Season 1

The imposing city of Washington D.C. was inspired by the ancient world, as seen in the Greek pillars, Roman domes and even an Egyptian-style obelisk that mark the landscape.

7. The Mystery of Puma Punku

2014 - Season 1

What was the purpose of the vast construction at Puma Punku? Giorgio Tsoukalos explores the construction and mysterious history of this unique ancient site. Why is there no evidence of the precision tools required to create the unique blocks and sophisticated masonry found there?

6. The Mystery of the Cyclops

2014 - Season 1

The mysterious Mediterranean island of Malta lies south of Sicily and is home to megalithic structures built by a mysterious prehistoric society. According to scholars, the massive blocks even pre-date the Great Pyramid of Giza. Just who were the people that built these sophisticated structures? Local folklore describes Malta as being the home of giants and the legendary one-eyed creature known as Cyclops. Could these stories be true--or could they offer clues to an extraterrestrial connection? Ancient Astronaut theorist Giorgio Tsoukalos investigates Matla's giant stone structures, unexplained rock carvings and mysterious elongated skulls. Could these strange antiquities be connected--and might they prove that there was a highly advanced civilization on Malta in the remote past--one that was perhaps in contact with ancient astronauts?

5. Searching for Bigfoot

2014 - Season 1

Could Bigfoot be the result of genetic experiments carried out by aliens thousands of years ago? If so, could this explain how the hairy beast has survived, virtually undetected, in remote places across the planet?

4. The Roswell Rock

2014 - Season 1

A mysterious rock bearing a cryptic design was discovered in Roswell, New Mexico in 2004. Now coined "The Roswell Rock," this piece of stone is unusually smooth and possesses unique magnetic properties. Even more intriguing is that the motif on the rock--a sequence of triangles and crescents--is an exact match to a crop circle found in England nearly two decades ago. Ancient Astronaut Theorist Giorgio Tsoukalos sets out to determine the origin of this intriguing stone. Through a series of experiments Tsoukalos unveils whether The Roswell Rock is merely a man-made fabrication or something much more. How could the precise design have been created without leaving evidence of altering the stone? Why does this small rock react to magnets? And most baffling of all--why does the design match a crop circle that appeared more than 4,000 miles away from the Nevada desert?

3. The Mystery of Loch Ness

2014 - Season 1

The Loch Ness Monster is one of the world's most enduring mysteries. But there have also been accounts of similar cryptids all over the planet. Sightings of these mysterious creatures have been documented for hundreds of years in various cultural folklores. Are these fantastic creatures leftover dinosaurs, mythical animals or something that traveled to Earth millions of years ago? Or might the sightings of these strange beasts be a glimpse into the past caused by a disturbance in the space-time continuum? Ancient Astronaut theorist Giorgio Tsoukalos travels from the Highlands of Scotland to the shores of Vermont's Lake Champlain in his quest to learn more about these elusive lake monsters. Could there be a link between two of the most famous creatures in the world--Nessie and Champ? Is there a correlation between the geology of their locations? And what surprising role might physics play in understanding just what eyewitnesses claim to have seen?

2. Nazi Time Travelers

2014 - Season 1

At the height of World War II, the Nazis engaged their top scientists to develop "wonder weapons"–weapons that were so scientifically advanced they could have turned the tide of the war against the Allies. According to testimony, one of the top-secret projects was code-named "Die Glocke." Die Glocke was believed to be a bell-shaped time travel device that could soar through the sky and eventually reach the speed of light and beyond. Did Die Glocke actually exist? And if so, could it have been based on alien technology? Theorist Giorgio A. Tsoukalos travels from Poland to Pennsylvania on the trail of the Nazis' "wonder weapon." Did the Nazis find advanced knowledge in ancient texts that enabled them to develop anti-gravity technology? And was the construction of a time travel device made possible by reverse-engineering extraterrestrial technology?

1. The Hunt for Atlantis

2014 - Season 1

Ever since Plato first wrote about the mysterious island of Atlantis, it has captured the imagination of adventurers and academics alike. Was Atlantis merely a myth, or could it have actually existed in the remote past? Did Atlantis just disappear as Plato described, and could it have been the home of an advanced civilization that created the human race?