CTV Nature

Machu Picchu is one of the greatest landmarks of world architecture, yet the purpose of its construction and how it was built still remains a mystery; experts use cutting-edge engineering to reveal what it would take to rebuild this legendary city.

The Hoover Dam was America's biggest build; its epic construction brought thousands to the wild, Wild West, creating a desert oasis of opportunity during the darkest decade of the 20th century.

The Parthenon is the crowning jewel of ancient Greek architecture, and it was engineered according to a mysterious mathematical formula; expert builders examine the secrets of its design and investigate if modern-day methods could rebuild it.

Machu Picchu is one of the greatest landmarks of world architecture, yet the purpose of its construction and how it was built still remains a mystery; experts use cutting-edge engineering to reveal what it would take to rebuild this legendary city.

The Hoover Dam was America's biggest build; its epic construction brought thousands to the wild, Wild West, creating a desert oasis of opportunity during the darkest decade of the 20th century.

The Parthenon is the crowning jewel of ancient Greek architecture, and it was engineered according to a mysterious mathematical formula; expert builders examine the secrets of its design and investigate if modern-day methods could rebuild it.

The highly-specialized North Rail Express container train travels from Narvik to Oslo, delivering cargo of fish as quickly as possible.

The Glacier Express features cutting-edge technology to pull the train up the steepest slopes on its route across the Swiss Alps.

The Ghan takes passengers on a three-day, two-night journey through Australia; the Pichi Pichi Railway offers passengers a trip on an original steam locomotive train.

The White Pass and Yukon route was built in 1869 to take miners and supplies to the Klondike gold fields.

Two magnificent journeys with New Zealand's KiwiRail: the TranzAlpine, a five-hour journey across 223 kilometers, and Northern Explorer, an 11-hour trip through five unique regions of the North Island.

Passengers on Ecuador's Tren Crucero experience a dangerous rail journey, which includes tropical jungles, volcanoes and the Devil's Nose.

Hector Rail's trains haul timber to a pulp mill in Ostrand, Sweden on some of the most difficult railways in the country.

Surgical instruments; ketchup; double-decker buses; walking sticks.

Audio vacuum tubes; shredders; wood model aircraft, metal snare drums.

Kitchen accessories; vacuums; papier-mâché; hydraulic cylinders.

Clay; liquor jugs; deli meats; NASCAR engines.

Digital dentistry; nail clippers; poster restoration; canola oil.

Dial thermometers; hummus; spent fuel containers; straw sombreros.

Tequila; waterbeds; flip-flops; silver.

Composite propane cylinders; salsa; water-pumping windmills; dragsters.

Exploring the production processes for kelp caviar, luxury sailboats, dental crowns and high-performance engines.

Leather briefcases; crop-dusters; corn whiskey; drag-racing clutches.

Follow the manufacturing processes behind train rails, desalinated water, racing wheelchairs and parquetry flooring.

Following the manufacturing processes behind flight simulators, traditional bookbinding, greenhouse tomatoes and hurricane-proof shutters.

Worcestershire sauce; lawn bowls; radio-controlled model jets.

Pipes; rock-climbing gear; leather bike saddles; luxury sports cars.

Replica foods, traffic cone dispensers, rocking horses, London taxis.

Surgical instruments; ketchup; double-decker buses; walking sticks.

Audio vacuum tubes; shredders; wood model aircraft, metal snare drums.

Kitchen accessories; vacuums; papier-mâché; hydraulic cylinders.

Clay; liquor jugs; deli meats; NASCAR engines.

Digital dentistry; nail clippers; poster restoration; canola oil.

Dial thermometers; hummus; spent fuel containers; straw sombreros.

Tequila; waterbeds; flip-flops; silver.

Composite propane cylinders; salsa; water-pumping windmills; dragsters.

Exploring the production processes for kelp caviar, luxury sailboats, dental crowns and high-performance engines.

Leather briefcases; crop-dusters; corn whiskey; drag-racing clutches.

Follow the manufacturing processes behind train rails, desalinated water, racing wheelchairs and parquetry flooring.

Following the manufacturing processes behind flight simulators, traditional bookbinding, greenhouse tomatoes and hurricane-proof shutters.

Worcestershire sauce; lawn bowls; radio-controlled model jets.

Pipes; rock-climbing gear; leather bike saddles; luxury sports cars.

Replica foods, traffic cone dispensers, rocking horses, London taxis.

A plane with members of the Manchester United football team crashes while heading home from Yugoslavia, killing 23 aboard.

Korean Air Cargo Flight 8509 crashes shortly after take off from London Stansted Airport on December 22, 1999.

In 1978, PSA Flight 182 collides with a Cessna and crashes into a San Diego residential area killing people on both planes and seven people on the ground.

On July 11, 1991, the crew of Nigeria Airways Flight 2120 unsuccessfully tries to return to the airport after a burst tire creates an in-flight fire which causes 247 Nigerian pilgrims and 14 crew to perish.

Moments before Pacific Southwest Flight 1771 crashes on a cattle ranch in California, gunshots are heard in the cabin.

A plane with members of the Manchester United football team crashes while heading home from Yugoslavia, killing 23 aboard.

Korean Air Cargo Flight 8509 crashes shortly after take off from London Stansted Airport on December 22, 1999.

In 1978, PSA Flight 182 collides with a Cessna and crashes into a San Diego residential area killing people on both planes and seven people on the ground.

On July 11, 1991, the crew of Nigeria Airways Flight 2120 unsuccessfully tries to return to the airport after a burst tire creates an in-flight fire which causes 247 Nigerian pilgrims and 14 crew to perish.

Discover how turbochargers, enchiladas and watches are made.

Patterned glass panels; road cases; stop-frame animation.

A look into how industrial wire ropes, living walls, large format cameras and gemstones are made.

Discover how chocolate coins, floor heating systems, pedal cars, playground equipment and latex swords are made.

Discover how motorcycle jackets, shovels, intake manifolds and forged spades are made; how is farmed caviar produced?

The host explores and explains how wax figures, awnings and sandwich crackers are produced for public use and consumption.

The pilots of Southern Airways Flight 242 must try to land on a Georgia highway after the engines die and the windshield shatters.

Australia's biggest gold mine; world's biggest motorcycle and longest truck; longest road construction project in Australia.

The fleet competes for final paychecks, and the two top boats are forced off the water.

Discover how turbochargers, enchiladas and watches are made.

Patterned glass panels; road cases; stop-frame animation.

A look into how industrial wire ropes, living walls, large format cameras and gemstones are made.

Discover how chocolate coins, floor heating systems, pedal cars, playground equipment and latex swords are made.

Rome's Pantheon hides the secret to the Roman Empire's power; it took dangerous, cutting-edge engineering to build it; experts use technology and modern-day science to reveal if building it a second time would be just as deadly.

The fleet competes for final paychecks, and the two top boats are forced off the water.

Australia's biggest gold mine; world's biggest motorcycle and longest truck; longest road construction project in Australia.

The pilots of Southern Airways Flight 242 must try to land on a Georgia highway after the engines die and the windshield shatters.

Discover how turbochargers, enchiladas and watches are made.

Patterned glass panels; road cases; stop-frame animation.

A look into how industrial wire ropes, living walls, large format cameras and gemstones are made.

Discover how chocolate coins, floor heating systems, pedal cars, playground equipment and latex swords are made.

Discover how motorcycle jackets, shovels, intake manifolds and forged spades are made; how is farmed caviar produced?

The host explores and explains how wax figures, awnings and sandwich crackers are produced for public use and consumption.

Rome's Pantheon hides the secret to the Roman Empire's power; it took dangerous, cutting-edge engineering to build it; experts use technology and modern-day science to reveal if building it a second time would be just as deadly.

The pilots of Southern Airways Flight 242 must try to land on a Georgia highway after the engines die and the windshield shatters.

Australia's biggest gold mine; world's biggest motorcycle and longest truck; longest road construction project in Australia.

The fleet competes for final paychecks, and the two top boats are forced off the water.