Learn how and why large projects were built, the financial and social costs of their failure, and the environmental consequences. Can something new be constructed from the ruins?

A British woman in the 20th century stunned Egyptologists by accurately locating structures and artefacts. Perhaps she had an otherworldly agenda?

For centuries, tales of terrifying monsters have fascinated mankind. Get to know the beasts that have been portrayed in some of history's classic stories.

When the team conducts their most ambitious experiment yet at the Triangle, they are shocked by what appears in the sky above Skinwalker Ranch.

First Lady of Pawn: Rick grapples over a decision when a WWE Hall of Fame ring hits the store.

Pawn No Evil: Chum checks out a Japanese animatronic monkey - is it worth a pretty penny or is the seller going to make a monkey out of him?

William Shatner examines some of the world's stunning displays of natural phenomena that are so spectacular - and strange - that they defy wisdom.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace?

Four bladesmiths put it all on the line when they are challenged with creating their most dazzling Damascus knife.

With the power in their hands, will a seller toy with Chum's emotions when he gets his hands on a trio of vintage comic strip characters?

Ton and Allen challenge a big time auction buyer on his home turf. The guys uncover a 1969 Chevelle Malibu muscle car and a single-shot pistol designed to aid Allied resistance fighters during WWII.

Ton and Allen take on a local thrift store gang in Brooklyn. The guys discover a classic arcade redemption game and a mid-century water cannon designed to fight towering infernos.

A chandelier made out of KFC buckets lights up the shop and Rick gets amped up over a very special motorcycle.

Four smiths must forge signature blades from the metal found in household items, before two smiths recreate one of history's most iconic sabres.

Dwight and Tyesha tangle with an animatronic T-Rex and chop it down to size, while Doug bites off more than he can chew when moving a massive backyard Pirate Ship playhouse.

Titanic Pawn: A 1906 Silver Half Dollar that belonged to a passenger on the Titanic sails into the shop. Will Rick snap it up or will it sink without trace?

A set of playing cards from 1769 with a hidden political message shuffles into the shop, while Corey checks out a set of Charlie's Angels figurines.

At the Bill Moran School of Bladesmithing, three top smiths are put through the ultimate test. After two brutal challenges, only one will get the chance to compete for the grand prize.

At the New Agrarian School in Bigfork, Montana, three top smiths are tested like never before. After two gruelling challenges, only one will go through to the the finals.

Modern-day pirates blindly bid on abandoned storage units that may contain junk or treasure.

The buyers head to Palm Springs in search of higher-end goods. Kenny tries to amp up the profit on a unit and Rene sees quick potential where others don't.

After returning to LA, Ton and Allen butt heads with a familiar old foe. They discover a driving range golf ball picker vehicle and one of the most accurate rifles ever made.

Ton and Allen face-off against a buyer with shady bidding tactics. The guys find a custom-built monowheel and a rifle designed to ward off grave robbers in the early 19th century.

Rick and Corey race to San Diego to take a spin in the classic car Hell's Chariot, from the movie Grease.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace?

This two-hour special reveals the complicated history, extreme politics and rigid societal standards that have created a legacy of internal oppression and external aggression in North Korea.

Rick and the gang encounter seeds that were sent into space, a spaceship toilet seat, and a photo autographed by famous astronauts in this collection of scenes.

From glyphs in the Peruvian desert to spiral petroglyphs embedded with advanced maths, explore some of the world's most intriguing symbols and codes.

With the dead of winter closing in fast, time is running out as the team performs a three-dimensional scan of Skinwalker Ranch.

Pawn Or Alive: Rick's taste for football is wetted when a bucket hat lands at the shop. Spencer provides an Incredible Hulk comic book, capturing Corey's imagination.

William Shatner examines some of the world's stunning displays of natural phenomena that are so spectacular - and strange - that they defy wisdom.

Andy and Paul visit one of the world's largest sites of ancient Native American petroglyphs, discovering rock art that could provide compelling new evidence.

Learn how and why large projects were built, the financial and social costs of their failure, and the environmental consequences. Can something new be constructed from the ruins?

Four more bladesmiths head into the forge to prove they have the mettle to master metal.

Rare and extraordinary footage, colourised for the first time, brings some of the Second World War's most significant battles vividly to life.

After Germany makes a push to take Paris, America is forced to make hard decisions that will either break the Allies or turn the tide of war. Key regiments known as Big Red One and The Harlem Hellfighters help pave the way to a hard-fought victory.

As the Civil War rages on and the casualties build, Abraham Lincoln looks to the future and seeks a general who can end it once and for all.