Show cover for Cities of the Underworld

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!

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

Season 4 Ratings Summary

"Mayan Apocalypse" is the best rated episode of "Cities of the Underworld" season 4. It scored 6.6/10 based on 18 votes. Directed by N/A and written by N/A, it aired on 9/7/2021. This episode is rated 0.4 points higher than the second-best, "America's Military Underground".

  • Mayan Apocalypse
    6.6/1018 votes

    #1 - Mayan Apocalypse

    Season 4 Episode 1 - Aired 9/7/2021

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

    Director: N/A

    Writer: N/A

  • America's Military Underground
    6.2/1015 votes

    #2 - America's Military Underground

    Season 4 Episode 2 - Aired 9/14/2021

    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: N/A

    Writer: N/A

  • America's Unmapped Murder Tunnels
    6.5/1015 votes

    #3 - America's Unmapped Murder Tunnels

    Season 4 Episode 3 - Aired 9/21/2021

    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: N/A

    Writer: N/A

  • America's Ancient Ancestors
    6.1/1017 votes

    #4 - America's Ancient Ancestors

    Season 4 Episode 4 - Aired 9/28/2021

    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: N/A

    Writer: N/A

  • The Pirate Queen's Lair
    7.5/1012 votes

    #5 - The Pirate Queen's Lair

    Season 4 Episode 5 - Aired 10/5/2021

    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: N/A

    Writer: N/A

  • Templars and The Founding Fathers
    6.7/1010 votes

    #6 - Templars and The Founding Fathers

    Season 4 Episode 6 - Aired 10/12/2021

    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: N/A

    Writer: N/A

  • Secrets of the Ancient Metropolis
    7.2/108 votes

    #7 - Secrets of the Ancient Metropolis

    Season 4 Episode 7 - Aired 10/19/2021

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

    Director: N/A

    Writer: N/A

  • The Lost Aztec Colony
    7.3/1010 votes

    #8 - The Lost Aztec Colony

    Season 4 Episode 8 - Aired 10/26/2021

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

    Director: N/A

    Writer: N/A