The BEST episodes of Cities of the Underworld

Every episode of Cities of the Underworld ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Cities of the Underworld!

Right beneath our feet, there are cities hidden by time that may hold clues that could rewrite history. In “Cities of the Underworld,” Don Wildman travels to the farthest and deepest reaches of the globe, using cutting-edge technology to explore mysteries buried deep underground. Across the season, Don will follow in the footsteps of treasure hunters to search for a lost Aztec colony, travel to Croatia to learn about the lost history of a little known pirate queen who supposedly ruled her empire from a muddy cave, and explore tunnels below the city of Los Angeles that may hold the clues to solving one of the most infamous cold cases in American history.

Last Updated: 4/25/2025Network: HistoryStatus: Ended
Hitler's Underground Lair
star
8.00
54 votes

#1 - Hitler's Underground Lair

Season 1 - Episode 2 - Aired 4/30/2007

Go beneath the streets of Berlin and unearth the remains of the Nazi bunkers.

Watch Now:Amazon
Scotland's Sin City
star
7.00
54 votes

#2 - Scotland's Sin City

Season 1 - Episode 1 - Aired 4/23/2007

Travel beneath the streets of Edinburgh and discover what has been forgotten, including the remains of body snatchers and outlaw distilleries.

Watch Now:Amazon
Gladiators: Blood Sport
star
7.00
27 votes

#3 - Gladiators: Blood Sport

Season 3 - Episode 8 - Aired 12/15/2008

Ancient Rome is explored, focusing on places associated with gladiators, including the Colosseum, brothels and crypts. Also: a school where gladiators learned how to fight and survive.

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Secret Sin City: Las Vegas, USA
star
7.00
27 votes

#4 - Secret Sin City: Las Vegas, USA

Season 3 - Episode 4 - Aired 11/16/2008

Underground Las Vegas is explored. Included: secret surveillance centers for casinos; underground vaults; and tunnels used during the Prohibition era.

Watch Now:Amazon
New York: Secret Societies
star
7.00
27 votes

#5 - New York: Secret Societies

Season 2 - Episode 9 - Aired 3/31/2008

New York City is the biggest city in the country, but it's got some dark secrets. Founded by covert groups, overrun with gangs and mob bosses, and ruled by secret societies, this is the true foundation of the city that never sleeps.

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Mob Underground
star
7.00
27 votes

#6 - Mob Underground

Season 2 - Episode 7 - Aired 3/17/2008

Chicago was once a playground for mobsters and corrupt politicians. It wouldn't be the third largest city in the U.S. today if it weren't for the shady dealings that went on just beneath its streets.

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Vietnam
star
7.00
27 votes

#7 - Vietnam

Season 2 - Episode 2 - Aired 2/4/2008

See a Vietnam that you've never seen before. During the Vietnam War the media flooded the world with images of soldiers and jungles. What wasn't seen were the tunnels, caves and passageways.

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London's Lost Cities: London, England
star
7.00
54 votes

#8 - London's Lost Cities: London, England

Season 1 - Episode 7 - Aired 6/11/2007

For thousands of years London has been among the most powerful cities in the world, below the busy streets and marketplaces another city hides--a city of Roman baths, secret crypts, lost rivers, indestructible bunkers that could hold up to 8,000 people, Winston Churchill's hidden war-rooms; host Eric Geller.

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New York
star
7.00
27 votes

#9 - New York

Season 1 - Episode 6 - Aired 6/4/2007

Explore beneath New York City, a living, breathing complex of engineering, history and secrets that could only exist in America's largest city.

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City of Caves: Budapest, Hungary
star
7.00
54 votes

#10 - City of Caves: Budapest, Hungary

Season 1 - Episode 5 - Aired 5/21/2007

Explore the caves beneath the city of Budapest, Hungary.

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Catacombs of Death
star
7.00
27 votes

#11 - Catacombs of Death

Season 1 - Episode 4 - Aired 5/14/2007

Snaking quarries, hidden catacombs and mushroom-harvesting tunnels lie beneath the city of Paris.

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Rome's Hidden Empire
star
7.00
27 votes

#12 - Rome's Hidden Empire

Season 1 - Episode 3 - Aired 5/7/2007

Discovering what life was like during Nero's tyranny and Augustus' reforms; host Eric Geller.

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Real Mafia Underground
star
0.00
0 votes

#13 - Real Mafia Underground

Season 3 - Episode 3 - Aired 11/9/2008

Underground Sicily and the origins of the Mafia are explored. Included: the escape route of a mob boss; a bone crypt; and bunkers used during World War II by the Axis powers.

Watch Now:Amazon
star
0.00
0 votes

#14 - 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.

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Hitler's Trenches
star
0.00
0 votes

#15 - Hitler's Trenches

Season 3 - Episode 5 - Aired 11/23/2008

Underground Belgium is explored, focusing on the trenches and tunnels of World War I.

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Barbarian's Lair
star
0.00
0 votes

#16 - Barbarian's Lair

Season 3 - Episode 6 - Aired 12/1/2008

Exploring life beneath the streets in Europe after the fall of the Roman Empire.

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Land of Manson
star
0.00
0 votes

#17 - Land of Manson

Season 3 - Episode 7 - Aired 12/7/2008

Underground Los Angeles is explored. Included: Charles Manson's subterranean hideaways; tunnels used by corrupt cops; the subway system; and military bunkers.

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Secret Holy Land
star
0.00
0 votes

#18 - Secret Holy Land

Season 3 - Episode 9 - Aired 12/22/2008

Underground Ethiopia is explored. Included: tombs of emperors; subterranean cathedrals; and the palace of the Queen of Sheba. Also: theories regarding the possible resting place of the Ark of the Covenant.

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Under the Rock
star
0.00
0 votes

#19 - Under the Rock

Season 3 - Episode 10 - Aired 1/12/2009

Underground San Francisco is explored. Included: an ammunitions depot; a former repository for nuclear missiles; Civil War fortifications beneath Alcatraz; and tunnels below Chinatown.

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Tomb of the Lost Mummies
star
0.00
0 votes

#20 - Tomb of the Lost Mummies

Season 3 - Episode 11 - Aired 1/26/2009

Underground Cairo is explored, focusing on ancient structures that have withstood time and countless invasions. Included: a step pyramid built a century before the Giza pyramids; and a tomb containing 2000-year-old mummies. Also examined: the Book of the Dead.

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Gods of War
star
0.00
0 votes

#21 - Gods of War

Season 3 - Episode 12 - Aired 2/2/2009

Underground Turkey is explored, focusing on the remnants from invasions and travelers on the trade routes. Included: the lore of the Trojan War.

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Alcatraz Down Under: Sydney, Australia
star
0.00
0 votes

#22 - Alcatraz Down Under: Sydney, Australia

Season 3 - Episode 13 - Aired 2/9/2009

Underground Sydney is explored. Included: a 19th-century prison; caves that were once home to fugitive outlaws; gold mines. Also: a secret World War II storage place for chemical weapons is toured by those who once worked there.

Watch Now:Amazon
star
0.00
0 votes

#23 - Mayan Apocalypse

Season 4 - Episode 1 - Aired 9/3/2021

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

Watch Now:Amazon
star
0.00
0 votes

#24 - 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.

Watch Now:Amazon
star
0.00
0 votes

#25 - Murder Tunnels

Season 4 - Episode 3 - Aired 9/25/2021

Don uses brand new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.

Watch Now:Amazon