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 3 Aliens and the Old West
- Season 3 Aliens and Monsters
- Season 3 Aliens and Sacred Places
- Season 3 Aliens and Temples of Gold
- Season 3 Aliens and Mysterious Rituals
- Season 3 Aliens and Ancient Engineers
- Season 3 Aliens, Plagues and Epidemics
- Season 3 Aliens and Lost Worlds
- Season 3 Aliens and Deadly Weapons
- Season 3 Aliens and Evil Places
- Season 3 Aliens and the Founding Fathers
- Season 3 Aliens and Deadly Cults
- Season 3 Aliens and the Secret Code
- Season 3 Aliens and the Undead
- Season 3 Aliens, Gods and Heroes
- Season 3 Aliens and the Creation of Man
Ancient Aliens - Season 3 Episode 13 Aliens and the Secret Code
7.00 42 minutes Megalithic monuments linked together by electromagnetic energy... Prehistoric ruins arranged across vast distances in straight lines... And advanced mathematics carved into landmarks more than 5000 years ago. Were ancient man's spectacular structures built by humans alone? Or do they bear evidence of being designed - and interconnected--by otherworldly visitors?
