Season
- Season 0 2009-03-08
- Season 1 2010-04-20
- Season 2 2010-10-28
- Season 3 2011-07-28
- Season 4 2012-02-17
- Season 5 2012-12-21
- Season 6 2013-09-30
- Season 7 2014-01-24
- Season 8 2014-06-13
- Season 9 2014-10-31
- Season 10 2015-07-24
- Season 11 2016-05-06
- Season 12 2017-04-28
- Season 13 2018-04-27
- Season 14 2019-05-31
- Season 15 2020-01-25
- Season 16 2020-11-13
- Season 17 2021-08-06
- Season 18 2022-01-07
- Season 19 2023-01-06
- Season 20 2024-01-05
- Season 21 2025-02-07
Season 21 Episode
- Season 18 The Disclosure Event
- Season 18 Mystery of the Standing Stones
- Season 18 Beneath the Sacred Temples
- Season 18 The World on Alert
- Season 18 Recovering The Ark Of The Covenant
- Season 18 Secrets Of The Star Ancestors
- Season 18 Alien Air Force
- Season 18 The Shadow People
- Season 18 Decoding the Dragon Gods
- Season 18 The Time Benders
- Season 18 Ancient Aliens On Location: Incredible Structures
- Season 18 Ancient Aliens On Location: Extraordinary Encounters
- Season 18 Ancient Aliens on Location: The Alien Glyphs
- Season 18 Ancient Aliens On Location: The UFO Investigations
- Season 18 Ancient Aliens On Location: Mysterious Artifacts
- Season 18 Ancient Aliens on Location: Evidence of Alien Life
- Season 18 The Shining Ones
- Season 18 The Journey to Immortality
- Season 18 Secrets of Inner Earth
- Season 18 Return of the Egyptian Gods
Ancient Aliens - Season 18 Episode 3 Beneath the Sacred Temples
7.00 42 minutes Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. What compelled early humans to rebuild in the same places again and again? Do these locations hold special power? And could they be points of ancient alien contact?
