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 centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.
TV-PGUHDHDCC
Season 1
10 episodes
1. Underground Cities and Secret ChambersScientists uncover a city, a chamber, and a complex, and map a tunnel network.TV-PGCC45minApr 24, 2026
2. Crystal Cathedrals and Buried BunkersScientists uncover salt chambers, bunkers, old kingdoms, and mysterious caves.TV-PGCC45minApr 24, 2026
3. Hidden Hypogeum and Lost LettersInvestigate 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.TV-PGCC45minMay 1, 2026
4. Tunnels and TombsCrawl 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.TV-PGCC45minMay 1, 2026
5. Labyrinths and LegendsExplore 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.TV-PGCC45minMay 8, 2026
6. Subterranean Secrets and Forgotten FoundationsWalk 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.TV-PGCC45minMay 8, 2026
7. Buried Battleship and Viking VictimsExamine 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.TV-PGCC45minMay 15, 2026
8. Bones Beneath and Coffins & CoinsDig 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.TV-PGCC45minMay 15, 2026
9. Subterranean Seoul and Railway RevealedDiscover 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.TV-PGCC45minMay 22, 2026
10. Secret School and Concealed Castle CemeteryVisit 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.TV-PGCC45minMay 22, 2026
Hidden Beneath the Cities
★ 6.0/1020261 season10 episodesReturning Series
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.
Creators and cast
- Studio
- National Geographic, Shark Teeth Films
