Ancient Aliens is counting down the world's top ten pyramid sites, from a valley in Peru with over 250 hidden pyramids to an ancient Greek city with mysterious 4800-year-old ruins to Egypt's famous Giza Plateau. Could the extraordinary structures that stand at these sites provide evidence of extraterrestrial visitation?

Ancient Aliens Season 17 Episodes...

• s17e01 - UFO Hotspots
• s17e02 - The Crop Circle Code
• s17e03 - Mystery of the Lost Civilization
• s17e04 - The Power of the Obelisks
• s17e05 - The MUFON Files
• s17e06 - Cosmic Impacts
• s17e07 - Close Encounters of the Fifth Kind
• s17e08 - The Mysteries of Alaska
• s17e09 - Aliens in Our Airspace
• s17e10 - The Giants of Malta
• s17e11 - The Top Ten Pyramid Sites
• s17e12 - The Top Ten Mysterious Devices
• s17e13 - The Top Ten Mysterious Islands
• s17e14 - The Top Ten Alien Craft
• s17e15 - Edgar Cayce: The Sleeping Prophet
• s17e16 - The Gods of Greece
• s17e17 - The New UFO Hunters
• s17e18 - Power of the Talisman
• s17e19 - The Top Ten Mysteries of the Deep
• s17e20 - The Top Ten Alien Petroglyphs

Ancient Aliens Show Summary

Presented in the 1968 bestselling book Chariots of the Gods by Erich von Daniken, the theory of "ancient aliens" rocked people's beliefs in mankind's progress. Ancient cave drawings of strange creatures, remains of landing strips in Peru, and Indian texts that describe the "flying machines of the gods" were just a few of the odd archaeological artefacts cited by von Daniken as proof that ancient astronauts were well known to our ancestors. Produced with the exclusive cooperation of von Daniken himself, Ancient Aliens launches all-new expeditions to seek out and evaluate this evidence, with a concentration on the latest discoveries of the last 30 years, including unusual DNA findings on man's evolution and newly decoded artefacts from Egypt to Syria to South America. It is a balanced investigation into a theory some believe cannot be true, but many agree cannot be ignored.

** Please Note: the schedule for Ancient Aliens is a 'best fit'. The official order has changed multiple times, and no one source agrees with another **