Series host and Ancient Astronaut theorist, Giorgio Tsoukalos, explores the mystery of the Nazca Lines found in the desert region of Southern Peru.

The Monoliths. Massive stone structures that reach to the heavens... strange, giant figures buried deep in the Earth... and energy emitting spheres connected around the globe... What compelled ancient man to move colossal stones.

Giorgio Tsoukalos offers the fascinating story of Nikola Tesla, one of the most productive inventors of the 20th century; Tesla is credited with shepherding mankind to a new industrial era and laying the groundwork for today's technological age.

Giorgio Tsoukalos explores the theory that some of the most famous ruins on Earth may be long-forgotten power sources that hold a celestial connection.

Giorgio Tsoukalos investigates one of the most mysterious locations on Earth, Puma Punku; the ancient ruins of Puma Punku are forty miles west of La Paz, Bolivia, high in the Andes Mountains.

Giorgio Tsoukalos decodes some of the most fascinating evidence for Ancient Astronaut Theory found in mysterious carvings, symbols, and structures that are strikingly similar on opposite ends of the Earth.