History HD

'S6/E9 - Best Builds: Seasons 3-5'. Ian looks back on some of his favorite builds and the friends who helped make it happen.

'S6/E1'. Ian helps a friend get a dream project together.

'S15/E2 - The Crop Circle Code'. More than 10,000 crop circle formations have been documented in over 50 countries, and many display properties that defy conventional explanations.

'S15/E3 - Mystery Of The Lost Civilization'. The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turns the world of archaeology on its head, displaying astonishing engineering skills.

'S15/E4 - The Power Of The Obelisks'. The obelisks of ancient Egypt was perfectly carved from a single granite rock. Ancient Astronaut Theorists suggest they powered a technology that allowed communication with the gods.

'S15/E5 - The Mufon Files'. MUFON is the world's leading organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters.

'S1/E6 - Disaster Strikes'. Jesse taunts Brandon and Lori in the hopes of instigating a fight and later unearths a ticking treasure. Then, seasoned local Victor throws down his bankroll for a trove of luxury goods.

'S1/E7 - Boston's Bad Blood'. Brandon and Lori return to Boston and square off against his former protégé Wade. The bad blood may just erupt into a full-out brawl on the auction floor.

'S1/E8 - Score Of The Century'. The score of a lifetime is hidden in the back of what already appears to be a great locker, but when the bidding heats up, will our auction heroes have the cash to stay in this game?

'S1/E10 - Cash Dash'. The competition heats up as Brandon and Lori find themselves in an all out bidding war with the tough-talking Taylor brothers.

'S1/E11 - Medieval Melee'. Our buyers go to war to win a locker packed with valuable vintage surf gear.

'S1/E13 - Dirty Gold Rush'. Our buyers lock horns to win a unit. Then, Brandon and Lori spot something that no one else does, but they'll have to play it cool if they want to walk away with this golden score.

'S1/E14 - Native Wars'. Minds are blown when two of our buyers team up for a major score. It's an unlikely pair that, together, could make a pile of cash.

'S1/E7 - Beastly Discoveries'. The biggest and scariest beasts are actually a lot closer to us than we think. From a mythical monster that turns out to be real, to one of the deadliest prehistoric animals on the planet.

'S1/E8 - Dark And Deadly'. We uncover some of the world's most dangerous and deadly accidental discoveries.

'E1 - A Big Find'. An elite team attempts to unravel the mystery of why 27 US Navy aviators and crew vanished without a trace on the same night in 1945.

'E2 - Rogue Waves'. The team dives deep in search of the biggest vessel to ever vanish in the Bermuda Triangle - a massive ship with a monstrous name - the USS Cyclops.

'E3 - Holes In The Ocean'. The team searches for the remains of an entire pirate fleet that vanished suddenly in the Bermuda Triangle, as if swallowed by the ocean.

'S2/E1 - Extraterrestrial Teachers'. Across time and cultures, from ancient Egypt to Mesoamerica, civilisations have preserved remarkably similar accounts of sky beings who bestowed the foundational elements of civilisation.

'S15/E1 - The Hotspot Connection'. Studies have shown that up to 70% of all UFO sightings happen in so-called 'hotspots' where reports of visions, mysterious lights and unusual phenomena are regularly witnessed.

'S15/E2 - The Crop Circle Code'. More than 10,000 crop circle formations have been documented in over 50 countries, and many display properties that defy conventional explanations.

'S15/E3 - Mystery Of The Lost Civilization'. The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turns the world of archaeology on its head, displaying astonishing engineering skills.

'S15/E4 - The Power Of The Obelisks'. The obelisks of ancient Egypt was perfectly carved from a single granite rock. Ancient Astronaut Theorists suggest they powered a technology that allowed communication with the gods.

'S15/E5 - The Mufon Files'. MUFON is the world's leading organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters.

'S16/E19 - The Chosen'. Throughout history there have been people who claimed to have contact with otherworldly beings. Could it be that they have been chosen to help carry out an extraterrestrial agenda?

'S6/E12 - The Missing Riches Of Genghis Khan'. The legendary ruler Genghis Khan who amassed a fortune estimated to be worth 120 trillion in today's dollars hid his riches so well that to this day no one has unearthed them.

'S1/E4 of 4 - Hitler's Lovers'. Cataloguing the many lovers of the Nazi dictator, and charting the unfortunate demise of all who dared resist his love, affection and sexual appetite.

'S1/E4 - Warlord'. After the humiliation of the First World War, Hitler was determined to crush communism and create 'Lebensraum' or living space for Germany. His ambition drove him to war in a bid for German global domination.

'S2/E5 - Screeched In'. In a church filled to the rafters with handmade furniture, a shark's jaw, and vintage photographs, Sheldon spots a solid brass ship wheel akin to the nautical world's Holy Grail.

'S2/E7 of 11 - Of Biblical Proportions'. For thousands of years, human ingenuity has shaped awe-inspiring monuments of faith. From Vatican basilicas and Egypt's wonders to a Biblical tower and a lost city in the clouds of Peru.

'Junk & Disorderly: Henry's Wreck-Trospective. S1/E1 - The Weston Park Wreck-Trospective'. Henry, Allen, and Guy take a look back at some of their most memorable moments.

'S1/E4 of 4 - Hitler's Lovers'. Cataloguing the many lovers of the Nazi dictator, and charting the unfortunate demise of all who dared resist his love, affection and sexual appetite.

'S1/E4 - Warlord'. After the humiliation of the First World War, Hitler was determined to crush communism and create 'Lebensraum' or living space for Germany. His ambition drove him to war in a bid for German global domination.

'S20/E3 - Picking Against Time'. On the hunt for a delectable Porsche, Mike speed-picks in South Carolina while Rob and Jersey visit a motel-size collection of petroliana.

'S20/E4 - The Five-Generation Pick'. Mike visits a time-capsule drugstore in Indiana, and Robbie and Jersey comb through a five-generation farmstead in West Virginia.

'S20/E5 - The Mile-Long Yard Sale'. Mike and Jersey trip out over an Oddfellow's Lodge in Maryland, and visit one man's combination theme park, art installation and roadside attraction.

'S20/E6 - Roadside Relics'. Mike uncovers a Godzilla-size stockpile of vintage movie posters, and Robbie pays up for a pair of ultra-rare Chevy signs for the shop in Tennessee.

'S1/E1 - Bloody Battle'. Competition boils over when bitter rivals Brandon and Jesse throw down over a storage unit containing an amazing movie monster and a potential hundred thousand dollar payout.

'S1/E2 - Cash Wars'. Brandon and Lori go to war over a record producer's storage unit and unearth a priceless piece of rock and roll history. Then, Jesse one ups the competition for a locker with a multi-thousand dollar payout.

'S8/E34 of 50 - Judges Takeover: J Neilson'. Four smiths are challenged to make something from one of the strangest places around: The mind of J Neilson. Which smith can conquer J's brutal challenges?

'S8/E35 of 50 - Young Guns Challenge'. In this special competition, four young champions return to compete in the Young Guns Challenge. These talented 20-somethings are tasked with turning trampolines and skateboards into knives.

'S6/E13 - Fire In The Holes'. After obtaining shocking new data on the ceramics that came out of the Mesa, the team performs a final and explosively revealing experiment on the Bubble.

'S3/E5 - Purgatory Bridge'. Andy and Paul return to Miller Ranch, site of numerous cattle mutilations and highway deaths, to poke the hornet's nest at the bridge that has been dubbed 'The Miller Triangle' by the Skinwalker team.

'S1/E13 - Dirty Gold Rush'. Our buyers lock horns to win a unit. Then, Brandon and Lori spot something that no one else does, but they'll have to play it cool if they want to walk away with this golden score.

'S1/E14 - Native Wars'. Minds are blown when two of our buyers team up for a major score. It's an unlikely pair that, together, could make a pile of cash.

'S1/E15 - Smoking Hot'. Jesse and Brandon get in a spirited bidding war after one of them spots a hidden treasure, a savvy newbie enters the fray and steals a prize from the regulars.

'S15/E5 - The Mufon Files'. MUFON is the world's leading organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters.

'S15/E6 - Cosmic Impacts'. Meteor impacts created the ideal environment for human civilisation and provided essential metals. But could new evidence reveal that celestial objects have been directed to Earth by aliens?

'S6/E13 - Fire In The Holes'. After obtaining shocking new data on the ceramics that came out of the Mesa, the team performs a final and explosively revealing experiment on the Bubble.

'S3/E5 - Purgatory Bridge'. Andy and Paul return to Miller Ranch, site of numerous cattle mutilations and highway deaths, to poke the hornet's nest at the bridge that has been dubbed 'The Miller Triangle' by the Skinwalker team.

'S1/E5 - Queen Boudicca's Revolt'. Karl Ude-Martinez puts ancient swords, spears and armour to the test as he revisits the bloody British uprising against the Roman invaders.

'E4 - Spies In The Deep'. The team use one of the most advanced research ships on the planet to search the depths for a lost secret weapon of the Pentagon's arsenal: a secret spy plane that vanished into the Bermuda Triangle.

'S8/E36 of 50 - Judge's Takeover: Ben Abbott'. In this special competition, every aspect of the challenge will be decided by two-time champion Ben Abbott. Four smiths must recreate the billhook knife, a weapon dear to Ben's heart.

'S20/E8 - The Boneyard'. While combing through his buddy's bad-to-the-bone boneyard in Cleveland, Mike uncovers a massive stash of brass-era bikes and is determined to buy them all.

'S1/E16 - Triple X'. Our Buyers bid big to win a locker packed with what looks like rare art, but will the winner walk away with cash or counterfeits?

'S1/E17 - Built For Speed'. Our buyer go head-to-head to score an item that appears to be a covered car. But when the tarp is pulled back, will the winner drive away with a pile of cash or a piece of trash?

'S1/E18 - Buyer Beware'. Bids on a covered car are driven up, Dan dings Jesse for a locker loaded with pricey tools, but the latter bounces back for a big score, and the day's final auction gets everyone intensely involved.

'S3/E5 - Home On The Strange'. 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.

'S1/E1 of 8 - The Gladiators'. In 80 AD Emperor Titus opens the Colosseum with 100 days of spectacular games, including one of the most famous gladiatorial matches in Rome's history.

'S1/E2 of 8 - The Builder'. When master builder Haterius constructs the Colosseum from the ashes of Nero's Golden House, his work is far from over. New Emperor Domitian tasks him with adding a complex network of underground tunnels.

'S2/E6 - The Pyramid Tool Kit, The Killer Foot Machine And The Lost Head'. 150 years ago a strange set of objects are found in the Great Pyramid at Giza.