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The Best Episodes of Cities of the Underworld Season 4

Every episode of Cities of the Underworld Season 4 ranked from best to worst. Discover the Best Episodes of Cities of the Underworld Season 4!

Binge this in 5h 44m•Peaking at 7.9/10

Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground.

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Episode Rankings

  1. #1 Fan Favorite
    Cities of the Underworld Season 4 Episode 1 - Mayan Apocalypse
    6.8/10(18 votes)

    #1 - Mayan Apocalypse

    S4:E1

    Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.

    Director:Unknown
    Writer:Unknown

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  2. Cities of the Underworld Season 4 Episode 2 - America's Military Underground
    6.4/10(15 votes)

    #2 - America's Military Underground

    S4:E2

    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.

    Director:Unknown
    Writer:Unknown

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  3. Cities of the Underworld Season 4 Episode 3 - America's Unmapped Murder Tunnels
    6.6/10(16 votes)

    #3 - America's Unmapped Murder Tunnels

    S4:E3

    Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities. He explores the criminal underworld below Portland, Oregon; Seattle, Washington; Chicago, Illinois; and Los Angeles, California.

    Director:Unknown
    Writer:Unknown

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  4. Cities of the Underworld Season 4 Episode 4 - America's Ancient Ancestors
    6.3/10(17 votes)

    #4 - America's Ancient Ancestors

    S4:E4

    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.

    Director:Unknown
    Writer:Unknown

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  5. Cities of the Underworld Season 4 Episode 5 - The Pirate Queen's Lair
    7.9/10(12 votes)

    #5 - The Pirate Queen's Lair

    S4:E5

    Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the mighty Roman Empire.

    Director:Unknown
    Writer:Unknown

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  6. Cities of the Underworld Season 4 Episode 6 - Templars and The Founding Fathers
    6.9/10(10 votes)

    #6 - Templars and The Founding Fathers

    S4:E6

    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. English

    Director:Unknown
    Writer:Unknown

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  7. Cities of the Underworld Season 4 Episode 7 - Secrets of the Ancient Metropolis
    7.7/10(8 votes)

    #7 - Secrets of the Ancient Metropolis

    S4:E7

    Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.

    Director:Unknown
    Writer:Unknown

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  8. Cities of the Underworld Season 4 Episode 8 - The Lost Aztec Colony
    7.9/10(10 votes)

    #8 - The Lost Aztec Colony

    S4:E8

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

    Director:Unknown
    Writer:Unknown

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Season 4 Ratings Summary

"Mayan Apocalypse" is the best rated episode of "Cities of the Underworld" season 4. It scored 6.8/10 based on 18 votes. Directed by Unknown and written by Unknown, it aired on 9/7/2021. This episode is rated 0.4 points higher than the second-best, "America's Military Underground".