Washington D.C. is headquarters for one of the most powerful governments in the world, as well as some of the nation's deepest secrets. The decisions made here echo around the world, so while the seat of power rests above these streets, our nation's security depends on what happens underneath them. From top secret, high tech superbunkers to the underbelly of Capitol Mall, we'll delve into DC's subterranean defenses. Don will discover how the US prepares for the worst...from the ravages of disease to nuclear catastrophe.

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.

The mafia instills fear around the world, but in Sicily, its presence can't be ignored. This is where the mob got its start, with the help of the underground. We'll trace the Mafia's roots back to a vigilante secret society that created an underground network where they would hold trials against corrupt city officials and execute the accused. We'll track the escape route of a most-wanted mob boss through ancient subterranean waterways, and discover a bone-crypt that holds the key to Sicily's violent past. We'll even find out how the mafia teamed up with the Allies during WWII, undermining the Axis' line of bunkers deep within the hillside and embedding themselves into Sicilian society for good.

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.

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.

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.

Jack the Ripper terrorized the city with his gruesome slaughters. Secret pagan societies raised Hell. Thieves made a killing stealing fresh corpses. London's streets ran red with blood, and it seeped into the underground. It was a city filled with disease, misery and chaos, making it ripe for grisly murders and horrific rumors to spread like the plague. Tales of witches and killers, the Antichrist and pagan rituals filled the city... but behind every ghost story is the terrifying truth of what happened here. From creepy caves scrawled with warnings of witches to the sewers and crypts where murderers and thieves lurked beneath the city streets, London's underground is hiding dark secrets and clues to the bloody truth.

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.

Eric finds some knowledgeable guides to take him on a clandestine tour of the catacombs of Paris. Originally a limestone quarry, the vacant space produced its own utility and a rich history in war and in peace to hide things better kept unseen. But the catacombs also represent cracks in the foundation that threaten the stability of the city above the surface.

Constrained for space by a stone defensive wall and steep terrain, the people of Edinburgh build both high rises and subterranean dwellings to provide living space. Out of sight, the underworld attracts all manor of seedy activities.

When you think of Egypt, you think of the Pyramids, vast deserts and infamous leaders like Cleopatra. But there's more to the story. Underground Cairo is explored, focusing on ancient structures that have withstood time and countless invasions. Included: a step pyramid built a century before the Giza pyramids; and a tomb containing 2000-year-old mummies. Also examined: the Book of the Dead.

World War I was the bloodiest war the world had ever seen. A young Adolf Hitler served in the trenches and tunnels of Belgium's Western Front. Join host Don Wildman as he explores the subterranean web where 24,000 Allied soldiers waited to ambush the enemy, to the indestructible fortress that endured thousands of bombs daily. Discover the underground that made World War I one of the most brutal wars in history... and turned Hitler into the terrifying madman of World War II.

Ethiopia is home to some of the oldest settlements in the world. This cradle of mankind is a country born from legend and shrouded in mystery. Underground Ethiopia is explored. Included: tombs of emperors; subterranean cathedrals; and the palace of the Queen of Sheba. Also: theories regarding the possible resting place of the Ark of the Covenant.

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.

The gladiators of ancient Rome were the ultimate fighting machines. They waged bloody battles to the death for the entertainment of the masses--and to earn their freedom. From the depths of the vicious and magnificent Flavian amphitheater, to the buried brothel where they lived their last days, these are the secret lives of Rome's famed slave warriors. Peel back the layers to uncover the origin of these fierce fighters, as host Don Wildman heads into ancient crypts, subterranean chambers used for pagan worship, and to the school that taught the gladiators how survive... and how to kill.

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.

Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the mighty Roman Empire.

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America. English

The bombardment of Naples during World War Two revealed a forgotten underground world of ancient buildings, caverns and tunnels. This was fortunate because the underground provided shelter from the bombing as well as a window into Naples past all the back to the Greek Empire.

This program reviews Adolf Hilter's and Albert Speer's plans for a building boom that would turn Berlin into the capital city of the world. The plan included substantial below ground ...

Beneath the sunny façade of Sydney, Australia lies a dark past. Underground Sydney is explored. Included: a 19th-century prison; caves that were once home to fugitive outlaws; gold mines. Also: a secret World War II storage place for chemical weapons is toured by those who once worked there.

While most people think of San Francisco as a haven for peace-loving hippies, this city by the Bay is actually one of the biggest military defense installations in America. We'll take you beneath its picturesque hills and uncover the biggest ammunitions depot on the West Coast before plunging into a deadly arsenal that once stored nuclear missiles with more than six times the destructive power of the atom bomb dropped on Hiroshima. From the secret Civil War fortification buried beneath Alcatraz to the human trafficking tunnels winding below Chinatown, San Francisco's underground is evidence of its sordid past.

Located on the coveted gateway between the East and West, Turkey has a history marked by ambitious conquerors and great empires vying for control of the trade routes. Left behind was a rich mythology of gods and men with tales of epic battles which soaked Turkey's soil in blood. We'll uncover the truth behind these mysterious legends revealing how a nation at war turned underground for its only means of survival, a maniacal king's plot to overturn consecrated ground to build one of the Seven Wonders of the Ancient World and even an ancient healing spa of the gods!

Don Wildman explores deep below ancient ruins as he searches for clues pointing to the true fate of the once-mighty Mayan empire.

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.

Budapest is built upon on network of natural limestone caves that have been in use since humans first moved into the area. While exploring the caves Eric shares their color history which includes several violent periods in Budapest's past.

4000 years ago, a mysterious pagan society called the Hittites dug deep into the soft volcanic rock to carve out an intricate underworld. But after almost 800 years of rule, the Hittite Empire vanished without a trace. Where did their people go and what clues have they left behind in their complex subterranean world?