From the Legends of King Arthur and Robin Hood to the recent events of the Russian Revolution, history is full of fascinating and evocative unsolved mysteries. They have inspired, intrigued and often confounded us – but how much do we really know about them? And can we separate fact from fiction? In Mystery Files, the dust is blown off the case files of the world’s most famous and iconic mysteries in a dynamic series that asks, what is the truth behind the greatest stories ever told?

Harrowing stories of tragedy and triumph are brought to life through official reports, transcripts and interviews with the pilots, air traffic controllers and lucky survivors of history's most terrifying crashes. Widely considered to be the safest form of travel, air transportation is still in its infancy and when midair calamity strikes, the results are often catastrophic. From the cockpit to the cabin, from the control room to the crash scene, we uncover just what went wrong.

Hell Below is an event-based series charting the stealth game of sub sea warfare, tracking the dramatic narrative from contact to attack of the greatest submarine patrols of World War II. From the rise of the Wolfpack to the drive for victory in the Pacific, we profile the strategic masterminds and the rapid evolution of technology and tactics, as the threat of undersea warfare brings every sailor's worst nightmare to life. Expert analysis and stock footage are woven with narrative driven re-enactments filmed on authentic Second World War era submarines to place the characters at the heart of the action.

Discover the true stories involving very real people, places and events -- some known to the public, others hidden from it -- that went on to inspire some of Hollywood's biggest hits, most iconic heroes and notorious villains.

Take off on a thrilling flight across America. This epic series offers rare glimpses of our nation's most treasured landmarks, all seen from breathtaking heights. From busy cityscapes to quiet landscapes, we capture the history and the pageantry of our amazing country, which is as diverse as the people who occupy it.

Bill Pullman introduces and narrates this four-part documentary on the world's first national park, Yellowstone.

Little-known events that played a large role in determining the outcome of World War II are revealed in this documentary series.

Modern historians, equipped with state-of-the-art technology and newly discovered evidence, rewrite the nation's most iconic stories.

Take a journey back in time and immerse yourself in a 150-year-old battle that nearly split our nation in two. This three-part series explores famous and little known aspects of the Civil War, from the perspectives of the Union, the Confederacy and the millions of enslaved people struggling for freedom. Hosted by Ashley Judd, Trace Adkins, and Dennis Haysbert, all of whom had ancestors greatly affected by the war, this series delivers fresh insights and untold tales, brought to life through dramatic recreations and the Smithsonian Institution's vast collection of artifacts.

They are the high-flying pride of the U.S. military, one-of-a-kind warriors that, over the decades, collectively revolutionized aerial warfare. Through rare, archival footage and compelling testimonies, meet the men and women who fly and maintain these Air Warriors and see how they've overcome incredible obstacles to rule the sky.

From the 1920s through the 1960s, America transformed from a young country on the rise into a global superpower. Using digital colorization technology, we present these formative decades as few have seen them, revisiting 50 vibrant years of good times and great despair, technological triumphs and natural disasters, and global villains and national heroes.

Mighty Planes explores the art and science of aviation, on planes that soar to faraway places on astounding missions. From preparation, loading and take off, through the journey and to the landing and unloading, viewers will experience the high-stakes and high-stress jobs through the eyes and lives of the characters that make it all happen. Featuring the genius of flight technology with the aid of high-end CGI, shot in HD, and recorded in 5.1 surround sound, MIGHTY PLANES captures all the action as it happens.

Sprawling estates and magnificent castles dot Britain's landscape, passed down from one aristocratic heir or heiress to the next. But life in a stately home isn't quite the fairy tale it's made out to be. Join Julie Montagu, Viscountess Hinchingbrooke as she ventures through some of the most storied and remarkable estates in Great Britain. From England's Newby Hall and Holdenby House to Scotland's Inveraray and Floors Castles, this is an all-access look at grand residences and the families who keep their histories alive.

Documentary series investigating the evidence that supports some of the world's most notorious conspiracy theories.

Hosted by actor Tom Cavanagh, Stories from the Vaults is a series of 30-minute shows featuring a behind-the-scenes look at the Smithsonian Institution, the world's largest museum complex. The new series, produced by Caragol Wells Productions, showcases the Smithsonian's rarest treasures as Tom Cavanagh meets with the experts behind the Smithsonian and discusses what it takes to preserve these precious artifacts for the generations to come. Stories from the Vaults debuted September 2007 on Smithsonian Networks. The second season premiered Sunday July 12th, 2009.

Recent findings in the Middle East have radically changed our understanding of the birth of mankind and the spread of civilization across the globe. Join us on a 12,000-year journey uncovering how this region became a vital link between continents and lead the world's religious, scientific, and cultural enlightenment. On-location excavations and expert testimonies bring to life this epic journey of discovery from the East to the West.

Encounter the Pearl Harbor attacks, the L.A. riots, the Son of Sam murders and Patty Hearst's kidnapping the way they unfolded on TVs and radios across America. We present these shocking events from the 20th century, not through traditional journalistic reportage, but in real-time, as they were covered by national and local news broadcasts. This footage, much of which has not been seen in decades, gives an intimacy and immediacy to stories we thought we knew but will now rediscover through a unique perspective.

A chronicle of the daily challenges of the airport staff who manage to keep the Ted Stevens Anchorage International Airport (ANC) open, freight flowing, and passengers flying, all despite weather that regularly dips to -38 Fahrenheit and wind speeds that typically exceed 100 mph.

South African extreme fisherman Andy Coetzee embarks on an epic series of adventures to reel in some of the world's most elusive and iconic fish species.

Nowhere is the full range of nature's force more apparent than during a volcanic eruption. Join us on daring odysseys to the fiery hearts of these volcanic caldera and witness firsthand their awesome displays of power.