Watch S1, EP4: Tunnels and Tombs with Fubo for $0 Today

TVPGHDHidden Beneath the Cities1hNational Geographic

Explorers discover tunnel systems, a sprawling city, and military barracks.

Explorers discover tunnel systems, a sprawling city, and military barracks.

How to watch

Available on demand

More episodes

Hidden Beneath the Cities

S1, EP3 "Hidden Hypogeum and Lost Letters"

Archaeologists find a tomb, a haunting cave, and a sophisticated labyrinth.

Hidden Beneath the Cities

S1, EP4 "Tunnels and Tombs"

Explorers discover tunnel systems, a sprawling city, and military barracks.

Hidden Beneath the Cities

S1, EP5 "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.

Hidden Beneath the Cities

S1, EP6 "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.

Hidden Beneath the Cities

S1, EP10 "Secret School and Concealed Castle Cemetery"

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.

Hidden Beneath the Cities

S1, EP9 "Subterranean Seoul and Railway Revealed"

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.

Hidden Beneath the Cities

S1, EP8 "Episode 8"

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.

Hidden Beneath the Cities

S1, EP7 "Episode 7"

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.

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.
Original Air Date: Feb 25, 2026
Genres: DocuseriesTV Series
Rating: TVPG
Playback: HD
1 seasons available on demand
Available on

More documentary shows

See all

Forensic Files

Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.

To Catch a Smuggler

Homeland Security at JFK International Airport deals with daily issues ranging from fraudulent visas to human trafficking.

Aerial America

Some people like to hop in a car to take a road trip across America, visiting as many landmarks as possible along the way. Since such a trek can take a while to complete, taking a flight across America might be a better option for some people. "Aerial America" takes viewers on such a flight, offering rare looks at some of the nation's best-loved landmarks from high in the sky. Cameras capture the history and pageantry of America as they zoom over busy cityscapes and quiet, rural lands. Many episodes focus on a specific state, showcasing highlights of the state's beauty, while others revolve around themes such as the best small towns and natural wonders found in the country.

Dateline

"Dateline" has been a staple of the newsmagazine genre since premiering in 1992. Given how long it's been on the air, the show has an extensive archive of in-depth news stories and investigative journalism. This syndicated version offers viewers another chance to watch some of the show's previous content, serving up real-life mysteries and in-depth investigations from the show's 20-plus years on the air. Cases involving murders and missing people are frequent topics on the series that has won multiple Emmys in the news and documentary category.

Explore {{ type }} on Fubo

Action

Comedy

Documentary

Drama

Family

Home/Cooking

Horror

Music

Nature

News/Talk

Reality

Romance

Science Fiction

Sports