Cities of the Underworld Season 4 Episodes

Find out where to watch Season 4 of Cities of the Underworld tonight
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Season 4 Episode Guide

Episode 1 - Mayan Apocalypse

Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.
Episode 2 - America's Military Underground

Don explores top-secret military and government tunnels and looks into classified technology that could be used to build entire cities...right under our feet.
Episode 3 - Murder Tunnels

Don uses brand new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.
Episode 4 - America's Ancient Ancestors

Don goes deep beneath the great lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling society that may have been the first people to reach America.
Episode 5 - The Pirate Queen's Lair

Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.
Episode 6 - Templars and the Founding Fathers

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.
Episode 7 - Secrets of the Ancient Metropolis

Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.
Episode 8 - The Lost Aztec Colony

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.


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