Ancient Aliens

2010 Series 22 Seasons TV-PG HD
DocumentaryMysterySci‑FiFantasy

Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

Ancient Aliens Season 22 Episode 4: Extraterrestrial Engineering – Watch Online

Season 22 · Episode 4 ·

Ancient Aliens Season 22 Episode 4: Extraterrestrial Engineering – Watch Online

Extraterrestrial Engineering

Host Giorgio Tsoukalos probes the series archives to explore remarkable ancient structures that defy conventional explanation. From the precisely cut stone blocks at Puma Punku, to the gigantic temples of Malta, and the megalithic city of Nan Madol, could these mysterious sites contain evidence of extraterrestrial contact in the distant past?

15 episodes

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Ancient Aliens

Episode 4 of season 22 of Ancient Aliens: “Extraterrestrial Engineering”. Aired 2026-02-05. Watch it online free on ZapFlix.