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TV series

Hidden Beneath the Cities

Latest episode

S1 E10 · Secret School and Concealed Castle Cemetery

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About Hidden Beneath the Cities

Hidden Beneath the Cities is a documentary TV series that premiered on National Geographic on April 24, 2026. It has 1 season and 10 episodes so far and is still airing new episodes. The latest episode, Season 1 Episode 10 "Secret School and Concealed Castle Cemetery", aired on May 22, 2026.

Uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.

  • Documentary

Last updated

Episodes

10 episodes · 1 season

Season 1

2026 · 10 episodes · Last episode: 5 months ago

Hidden Beneath the Cities uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centres, from the tombs and wartime shelters of Naples to the man made Royston Cave in Hertfordshire, England.

Hidden Beneath the Cities Season 1 release dates →
  1. Hidden Beneath the Cities S1 E10 still E10

    10. Secret School and Concealed Castle Cemetery

    Finale

    Visit a strange wood-lined tunnel beneath a Copenhagen train station. Locate one of North America's earliest schools for Black children in Virginia, excavate a warrior cemetery in Finland, and unearth a women-only burial plot beneath a Welsh castle.

  2. Hidden Beneath the Cities S1 E9 still E9

    9. Subterranean Seoul and Railway Revealed

    Discover a massive underground chamber hiding under the Seoul subway. Visit a medieval knight's limestone tomb in Poland, examine Roman ruins beneath a church in England, and ponder the identity of a 10-million-year-old fossil in Los Angeles.

  3. Hidden Beneath the Cities S1 E8 still E8

    8. Bones Beneath and Coffins & Coins

    Dig beneath the Treasury in Petra, Jordan, to find a sealed tomb containing 12 skeletons; unearth a hoard of coins hidden during a Scottish massacre, question the purpose of an empty grave in Peru, and inspect a Bronze Age leader's coffin in England.

  4. Hidden Beneath the Cities S1 E7 still E7

    7. Buried Battleship and Viking Victims

    Examine a Revolutionary War-era ship found in the rubble of the World Trade Center. Uncover a mass grave of Viking settlers in Oxford, visit the resistance bunkers of the Warsaw Ghetto Uprising, and tour a necropolis full of burial jars in Corsica.

  5. Hidden Beneath the Cities S1 E6 still E6

    6. Subterranean Secrets and Forgotten Foundations

    Walk the service tunnels hidden beneath Emperor Hadrian's lavish villa in Italy. Uncover a chilling mass grave from the Thirty Years' War in Germany, find the foundations of a Roman basilica in London, and glimpse Neolithic life on a Danish island.

  6. Hidden Beneath the Cities S1 E5 still E5

    5. Labyrinths and Legends

    Explore a labyrinth built beneath Washington, D.C., by an eccentric entomologist. Admire a fresco-filled Roman mausoleum, spot intricate chambers carved into Colombia's volcanic rock, and see a sprawling network of hand-dug tunnels in Liverpool.

  7. Hidden Beneath the Cities S1 E4 still E4

    4. Tunnels and Tombs

    Crawl through a notorious brick-lined tunnel system in a historic Florida neighborhood. Open a window into the lives of elite Greek families in Naples, explore a three-story underground city in Iran, and find 2nd-century barracks buried in Rome.

  8. Hidden Beneath the Cities S1 E3 still E3

    3. Hidden Hypogeum and Lost Letters

    Investigate a tomb in Naples that may contain a prince who inspired the legend of Dracula. Read the desperate letters of Jewish rebels hidden in an Israeli cave, tour a 6,000-year-old labyrinth in Malta, and see the oldest human burial in Africa.

  9. Hidden Beneath the Cities S1 E2 still E2

    2. Crystal Cathedrals and Buried Bunkers

    Scientists uncover salt chambers, bunkers, old kingdoms, and mysterious caves.

  10. Hidden Beneath the Cities S1 E1 still E1

    1. Underground Cities and Secret Chambers

    Scientists uncover a city, a chamber, and a complex, and map a tunnel network.

Hidden Beneath the Cities FAQ

When is the next episode of Hidden Beneath the Cities?

A date for the next episode of Hidden Beneath the Cities hasn't been announced yet. Follow Hidden Beneath the Cities in the Streambay app and you'll be notified as soon as a new episode airs.

When did the latest episode of Hidden Beneath the Cities come out?

The most recent episode of Hidden Beneath the Cities, Season 1 Episode 10 "Secret School and Concealed Castle Cemetery", aired on May 22, 2026.

How many seasons of Hidden Beneath the Cities are there?

Hidden Beneath the Cities has 1 season with 10 episodes in total.

When did Hidden Beneath the Cities first air?

Hidden Beneath the Cities first aired on National Geographic on April 24, 2026.

How do I get notified when new episodes of Hidden Beneath the Cities are released?

Download the Streambay app, follow Hidden Beneath the Cities, and you'll get a push notification the moment each new episode is released.

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