For billions of people across the globe, Jerusalem is considered ground zero for Armageddon. And while most of the world's population considers it a holy land, it's also one of the bloodiest cities the world has ever known. From a hidden occult city built by the Knights Templar to the hiding place for the Dead Sea Scrolls, the evidence of the apocalypse is buried all over the holy city. Host Don Wildman has special access to a sacred stone said to keep the world from ultimate chaos, and finds evidence of John the Baptist's apocalyptic sermons... he's heading into a vast underground that ignited the violent visions of the end of the world.

Be careful where you walk--history's afoot! See a Vietnam that you've never seen before. During the Vietnam War the media flooded the world with images of soldiers and jungles. What wasn't seen were the tunnels, caves and passageways. Join host Don Wildman as he discovers the massive CuChi tunnel system that gave soldiers the upper hand to the super-bunkers and secret caves used as shelters.

Tokyo, Japan is a city straight out of the future, above ground... and below. We'll go beneath the busy streets to see the latest technology that will save the city from the many natural disasters ready to strike. From there, we head back in time to World War II to see how Hiroshima's underground offered protection from the most powerful bombs... and get an inside look at the secret life of the Ninja. Don Wildman hosts.

Dublin, Ireland is much more than a city full of pubs and pints. Pagan burial tombs, subterranean defense tunnels, and mysterious burial crypts line the underground below the rolling hills. Even an underground river runs through the heart of the city where you'd least expect to find it.

Be careful where you walk--history's afoot! Prague is a city cloaked in mystery, with an underground to match. Medieval castles line the streets and hide dark dungeons deep below them. From quarries where Hitler may have stored his most powerful secret weapon to mines that doubled as Communist slave camps, Prague has surprising stories to tell. Join host Don Wildman as he reveals the technological marvels that allowed the construction of one city upon another-- literally.

Before the mysterious disappearance of the ancient Maya, Belize was the nerve center of this advanced civilization. Hundreds of ruins dot the landscape and reveal clues to bloody Mayan rituals, advanced architecture and a belief in an unforgiving underworld of Mayan gods. Don ducks beneath the jungles of Belize to uncover burial tombs, sacrificial altars, ritualistic caves and the literal entrances to the Mayan underworld.

Chicago was once a playground for mobsters and corrupt politicians. It wouldn't be the third largest city in the U.S. today if it weren't for the shady dealings that went on just beneath its streets. From vice dens and top-secret railroad lines to sunken shipwrecks and the spark that created the A-Bomb, host Don Wildman unearths the true history of the Windy City.

The ancient world was shaped by people who believed they foresaw the will of God. Jerusalem is at the heart of all their fiery prophecies. From the outcome of bloody wars to the birth of saviors, Jerusalem has been at the center of prophetic revelations. Join host Don Wildman as he peels back the layers of this sacred subterranean landscape to uncover an ancient escape route, a secret bullet factory, and the birthplace of Jesus. He sets out to find the truth behind Jerusalem's most mysterious and enduring prophecies, the people who foretold them and what was left behind... underground.

Today, New York is the biggest city in the country... but it's got some dark secrets in its past. It was founded by covert groups, overrun with gangs and mob bosses, and ruled by secret societies. This is the true foundation of the city that never sleeps, and host Don Wildman is headed deep beneath the skyscrapers, taxicabs and street vendors into a New York that few have ever seen before. From a hidden Freemason tunnel and secret world of the Sandhogs, to mobster hideaways and gang escape routes, we're uncovering the secret societies that built New York--from the underground up.

Moscow is a city known for its ruthless leaders and abundant secrets. Today it's a modern metropolis, but far below its crowded streets lie the reminders of its war-torn past, and pieces of Stalin's terrifying legacy. This subterranean web is so vast, modern day Moscow is actually in danger of caving in. From tunnels used to hide from Stalin's blood-thirsty henchmen, to secret metro systems and hidden bunkers, Don digs deep into Moscow's past.

Inflicting over $80 billion in damage, and causing the deaths of over 1,800 people, Hurricane Katrina was among the greatest engineering disasters in US history. But was Katrina the "big one" New Orleans had been waiting for? Many believe the "perfect storm" is yet to come. If and when the big one does hit, will New Orleans be ready? The answers are in the underground. From the Army Corps' latest levees to last-ditch efforts to use save New Orleans' vanishing wetlands, we're going deep into New Orleans' underground to see where New Orleans stands, and if it stands a chance.

Deep within the former Soviet Union lies a classified, subterranean world of Cold War secrets. In Ukraine, which once had the world's third largest nuclear arsenal, Don ducks behind the Iron Curtain to reveal a how the Soviets were really preparing for a Nuclear War. From nuclear submarine bases to underground apartment blocks, these sites are so top-secret, they've never before been seen on American television.