From a legendary city swallowed by the jungle, to an underground metropolis stretching 18 levels deep, and even a forgotten pyramid from a lost civilization, sometimes the biggest mysteries on Earth are closer than we think.

A forgotten manuscript in a dusty trunk. A priceless painting discovered in plain sight. A royal tomb hidden for millennia beneath the sands. These famous finds prove history’s greatest treasures often resurface when least expected.

In this final "Beat the Judges" competition, two former Forged in Fire champions duel it out in a 5-hour round, making a pichangatti. With only 8 hours to produce the intimidating shamshir, will this champion have what it takes to beat a judge?

Four smiths must sift through a pile of junk in order to make a signature damascus blade. After an intense couple of rounds, two smiths head back to their home forge to recreate a complex Broadsword featuring an unusual snake-shaped grind.

The myth of Merlin is associated with an arrangement of stones in northern France. Satellite images might finally explain this ancient riddle.

From killer hurricanes and tsunamis to earthquakes, floods and fires, these are the deadliest natural disasters ever recorded.

One spark is all it takes. From the Hindenburg disaster to Krakatoa’s violent volcanic eruption in 1883, these explosions are among history’s deadliest.

From the Johnstown flood to the Indonesian tsunami, discover how water’s power can transform into an unstoppable agent of death.

Whether crossing oceans or carrying out secret CIA missions, these operations prove that even the best planning can still end in danger.

Some secrets refuse to stay buried. Whether it’s illicit cargo in a frozen lake, a stolen masterpiece worth millions, or a brothel hidden in the shadow of the Capitol, the truth always resurfaces.

From a legendary city swallowed by the jungle, to an underground metropolis stretching 18 levels deep, and even a forgotten pyramid from a lost civilization, sometimes the biggest mysteries on Earth are closer than we think.

A forgotten manuscript in a dusty trunk. A priceless painting discovered in plain sight. A royal tomb hidden for millennia beneath the sands. These famous finds prove history’s greatest treasures often resurface when least expected.

In this final "Beat the Judges" competition, two former Forged in Fire champions duel it out in a 5-hour round, making a pichangatti. With only 8 hours to produce the intimidating shamshir, will this champion have what it takes to beat a judge?

Four smiths must sift through a pile of junk in order to make a signature damascus blade. After an intense couple of rounds, two smiths head back to their home forge to recreate a complex Broadsword featuring an unusual snake-shaped grind.

The myth of Merlin is associated with an arrangement of stones in northern France. Satellite images might finally explain this ancient riddle.

From killer hurricanes and tsunamis to earthquakes, floods and fires, these are the deadliest natural disasters ever recorded.

Ancient Aliens

Ancient Aliens is counting down ten of the most compelling UFO crashes that have been reported across the globe. From an acorn-shaped object that crashed in the woods of rural Pennsylvania, to a mysterious craft that washed ashore in Japan.

Ancient Aliens

Ancient Aliens is counting down ten of the most astonishing - and unexplainable - technologies in history. From mysterious golden orbs discovered in Mexico, to a sacred wooden box that could communicate with the heavens.

Ancient Aliens

Ancient Aliens is counting down ten of history's most compelling projects that study the UFO phenomenon. From clandestine government organisations to agents that silence UFO witnesses and secret programs to reverse engineer alien technology.

Clash Of Ancient Warriors

Thermopylae: one of the most famous battles of antiquity. For three days a few thousand Greeks, commanded by the Spartan king Leonidas, blocked the 2 million-strong army of the Persian king Xerxes in a narrow mountainous gorge, along the Aegean Sea.

In the sprawling basement of a legendary classic car showroom in Connecticut, Mike and Jersey pick through a monster lifetime collection. But the thrill of the chase is nothing compared to a joyride in a flame-shooting 1908 Locomobile.

In Alabama, Robbie and Jersey go hog wild for Edd's classic car collection and bad-to-the-bone boneyard--but he's reluctant to let anything go. Mike has a once-in-a-lifetime brush with country music stardom.

In L.A., Mike and Robbie head back to a fifth-generation demo business and junkyard that's piled so deep that most of its treasures are out of reach. In Florida, the 'Judge' plays mind games as the Wolfe brothers sift through his collection.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife, and time.

When humanity vanishes, the vast and fragile infrastructure hidden underground from subways and pipelines to one of the biggest coal seams in the United States begins to unravel.

Ancient Aliens

Ancient Aliens is counting down ten of the most compelling UFO crashes that have been reported across the globe. From an acorn-shaped object that crashed in the woods of rural Pennsylvania, to a mysterious craft that washed ashore in Japan.

Ancient Aliens

Ancient Aliens is counting down ten of the most astonishing - and unexplainable - technologies in history. From mysterious golden orbs discovered in Mexico, to a sacred wooden box that could communicate with the heavens.