America before Columbus was home to some of the greatest engineering marvels on the planet: Chichen Itza, the Statues of La Venta, Tikal, Machu Picchu, Cusco's Temple of the Sun, the Nazca Lines, and the Moai of Easter Island. Special access to hi-tech archaeological digs reveals the secrets of ancient America's Seven Wonders as experts investigate their mysterious purposes.

Investigators use cutting-edge tech to explore seven ancient pyramids from around the world; as experts explore their lost labyrinths and alien relics, they discover unexplained connections between cultures thousands of miles and years apart.