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10. Secret School and Concealed Castle Cemetery
May 22, 2026
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.
9. Subterranean Seoul and Railway Revealed
May 22, 2026
Discovering a massive underground chamber hiding under the Seoul subway; visiting a medieval knight's limestone tomb in Poland; examining Roman ruins beneath a church in England; pondering the identity of a 10-million-year-old fossil in Los Angeles.
8. Bones Beneath and Coffins & Coins
May 15, 2026
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.
7. Buried Battleship and Viking Victims
May 15, 2026
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.
6. Subterranean Secrets and Forgotten Foundations
May 8, 2026
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.
5. Labyrinths and Legends
May 8, 2026
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.
4. Tunnels and Tombs
May 1, 2026
Crawl through a notorious brick-lined tunnel system in a historic Florida neighbourhood. 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.
3. Hidden Hypogeum and Lost Letters
May 1, 2026
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.
2. Crystal Cathedrals and Buried Bunkers
April 24, 2026
Marvel at the crystal caves and underground chapels of Poland's Wieliczka salt mine. Tour a secret Cold War bunker in England, unearth a 3,400-year-old royal settlement in Egypt, and try to solve the mystery of China's enigmatic Longyou Caves.
1. Underground Cities and Secret Chambers
April 24, 2026
Uncover a vast underground city in Turkey that served as a refuge for Christians and Jews. Investigate a mysterious chalk chamber in England, visit a secret Etruscan complex beneath an Italian wine cellar, and map an ancient tunnel network in Iran.
Description
Where to Watch Hidden Beneath the Cities
Hidden Beneath the Cities is available for streaming on the website, both individual episodes and full seasons. You can also watch Hidden Beneath the Cities on demand at Hulu.
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Genres
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CastJeff TeravainenAnthea NardiAlison Leonard
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Premiere DateApril 24, 2026
