The Best TV Shows on Discovery Channel

The world's toughest treasure hunters push their bodies and bank accounts to the limit on a quest to strike it rich, hunting the legendary Queen of Gems - Opal.

Extraordinary show that reveals how forces of nature through sheer power of evolution shaped life in all it's unexpected and glorious forms, and filled our planet with amazing diversity of animals and plants.

A voyage of discovery as we follow the most astounding freight trains in the world, carrying extraordinary loads on a daily basis. From the deserts of Mauritania to the the freezing mountains of Canada we reveal the daily lives of the train crews as they battle to bring their loads in on time.

Paul Mackie and his expert team must haul a crew of first-time gold miners out of an epic three-year gold drought before their operation and family legacy ends in ruin.

Three hard-core crews of gold prospectors take the gamble of a lifetime and battle to strike it big, deep in the wild west of outback Australia. The soaring highs and the crushing lows of the gold season are revealed as the crews pursue their all-important targets - braving brutal heat, punishing conditions, mechanical breakdowns and constant pressure.

A new generation of fearless Australian treasure hunters are on a quest to unearth some of the world's rarest & ancient crystals. Five teams scour the oldest geology on earth, fueled by an eight-billion-dollar a year global crystal industry.

Discover what it takes to transport ever-growing numbers of passengers and crucial resources across Australia. With unprecedented access we go behind the scenes to meet the train drivers, locomotive servicing crews and track maintenance teams on some of the toughest and most spectacular journeys.

Robson Green embarks on an epic series of adventures across Australia. His aim is to understand what life is really like away from the familiar and famous destinations, by venturing into the outback and beyond.

Taking a look at the daily operations of this buzzing hive of activity, Sydney Harbour Patrol follows the elite team who work day and night to keep the world famous waterfront running. They fight to maintain law and order, ensure massive construction projects stay on track, protect the delicate ecosystem against poachers and keep congested shipping lanes clear of dangerous debris from accidents and fierce storms.This series shows the struggles and triumphs of this dedicated group of workers, as they tackle the Harbour's mammoth logistical challenges. With unprecedented behind-the-scenes access, Sydney Harbour Patrol reveals a side to one of the world's most beautiful cities that is rarely seen.

Follows Australian and New Zealand hardcore towing companies as they battle it out to win the toughest and most lucrative tow contracts in the Southern Hemisphere. Armed with monster machines and million-dollar hardware, teams winch and tow their way through epic piles of high-risk recovery missions.

The daily highs and lows on board an adventure passenger ship. Crossing continents, from tropical waters to ice-filled seas, this is the journey of a lifetime.

Documentary series recounting the histories of various European castles and their owners. Season 1 was an early widescreen program, formatted in 14:9, but season 2 was in standard 4:3 fullscreen.