Throughout the world, there are areas where strange activity, UFOs, bizarre orbs of light, and electromagnetic anomalies are regularly witnessed. Many of these sites correspond to locations where ancient civilizations chose to build and rebuild their most sacred architecture. Ancient Astronaut theorists propose these sites are remnants of a lost extraterrestrial electrical system–one erected to draw energy from the Earth, to fuel spaceships, and possibly even to open gateways into other worlds.