Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.
Don explores top-secret military and government tunnels.
Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.
Don goes deep beneath the great lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling society that may have been the first people to reach America.
Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.
Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.
Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.
Don Wildman explores London, England, above and below ground to uncover its violent crimes, extreme poverty and lawlessness during the chaotic Victorian period.
Host Don Wildman discovers what it was like to live through World War II's Battle of Okinawa by exploring the Japanese defenders' tunnels, caves and bunkers; diving to a destroyer sunk off Okinawa's coast.
Host Don Wildman travels to Sicily to trace the Mafia's roots back to a vigilante secret society in an underground network that was created to put corrupt city officials on trial and execute the guilty.
Host Don Wildman explores the secret underground that helped transform Las Vegas from a barren desert into a mobster metropolis; underground vaults; secret surveillance nerve centers.
Host Don Wildman explores the trench systems and fortifications that made World War I one of the most brutal wars in history and helped shape Nazi Germany's Adolf Hitler.
Host Don Wildman tracks down subterranean secrets from Europe's Dark Ages, including a secret society's immense quarries, Templar torture chambers and the tunnels of medieval "ghost knights."
Underground Los Angeles includes a haven for killer Charles Manson and his followers, tunnels where corrupt cops secretly ran the city, a dormant subway system, coastal military bunkers and war rooms ready for the next big quake.
Digging into the secret lives of ancient Roman gladiators, ranging from the depths of the Flavian amphitheater to a buried brothel where they lived their last days; host Don Wildman visits ancient crypts and chambers used for pagan worship.
Christianity evolves in unique ways in Ethiopia's ancient underground engineering marvels and remote, cliffhanging caves; emperors' tombs; subterranean cathedrals; the Queen of Sheba's buried palace; possible site of the Ark of the Covenant.
San Francisco is one of the nation's largest military defense installations with a huge underground ammunition depot, a former nuclear arsenal and Civil War fortifications buried under Alcatraz; human trafficking tunnels in Chinatown.
Host Don Wildman explores ancient structures buried beneath the desert sands of Egypt and the streets of Cairo, examines how these engineering marvels survived invasions, and discovers a tomb filled with 2,000-year-old mummies.
Australia's past had convicts transported from Britain, gold miners and outlaws; a 19th-century prison housed Sydney's most-dangerous criminals; a cave complex sheltered outlaws.
Evidence of the apocalypse is under the holy city of Jerusalem; host Don Wildman gains special access to a sacred stone said to protect the world from ultimate chaos.
Exploring Vietnam War-era tunnels, passages and secret caves used as shelters; the massive Cu Chi tunnel system; superbunkers.
Technology beneath the streets of Tokyo is to protect the city from natural disasters; Hiroshima's underground affords shelter from World War II's most powerful bombs; the secret life of Japanese ninjas.
Exploring mysterious tombs, defense tunnels and an underground river beneath Dublin, Ireland.
Prague, Czech Republic: quarries in which Adolf Hitler may have stored his most powerful secret weapon; mines that doubled as Communist slave camps.
A history of Chicago reveals vice dens, secret railroad lines, shipwrecks, and the spark that led to the atomic bomb.
Delving into Jerusalem's subterranean landscape uncovers an ancient escape route, a secret bullet factory, and data linked to the holy city's most-mysterious, most-enduring prophecies.
Dan Wildman explores the gangs, mob bosses, covert groups, and secret societies of early New York City; Wildman delves into the secret world of "sand hogs," mobster hideaways, hidden tunnels, and escape routes.
Exploring the top-secret underground defenses of Washington, D.C.; how the U.S. prepares for the worst possible scenarios, from a nuclear catastrophe to the ravages of disease.
Reminders of former Soviet leader Josef Stalin's terrifying legacy lie beneath the streets of Moscow in a subterranean web so vast that the Russian capital is in danger of caving in.
Specialists delve into the New Orleans underground to see how it stands in the wake of Hurricane Katrina and to assess whether the city would be ready for a similar storm in the future.
Host Don Wildman digs into the subterranean world of Cold War secrets in Ukraine, where the former Soviet Union stockpiled nuclear weapons, established submarine bases and built underground apartment blocks.
The hidden history of Edinburgh, Scotland, includes body snatchers, illegal distilleries and castle dungeons.
Exploring Nazi Germany's World War II bunkers beneath the streets of Berlin.
Beneath the city of Budapest, Hungary.
The history of New York City streets; host Eric Geller.
The subterranean secrets below London's most famous landmarks; Winston Churchill's hidden war-rooms; host Eric Geller.
Exploring the neighborhoods, banks, bakeries and other structures carved beneath Naples by ancient Neopolitans.
Freemasons leave behind hints about their role in the rise of America in tunnels beneath Boston and in a water world still intact in Philadelphia.
The mysteries of Vlad the Impaler lie beneath the city of Bucharest, Romania.
Discovering the ancient kingdom of Cappadocia.
Beneath the modern streets of Portland, Ore.
The ancient neighborhoods, sewer systems, aqueducts and theaters that lie beneath the modern streets of Rome.