The world's tallest and most advanced bridges were built with cutting-edge innovative technology, and behind-the-scenes access reveals how these colossal structures are built. This is a mashup of S02E02, "World's Tallest Bridge" (Millau Viaduct) and S05E09, "Himalayan Mega Train" (Qinghai-Tibet Railway).

New York City is home to some of the world's greatest engineering marvels, and behind-the-scenes access reveals how engineers build the city's tallest skyscrapers and its most cutting-edge structures. This is a mashup of S05E02, NYC Mega Build (Manhattan's Hudson Yards) and S07E04, NYC Mega Tower (111 West 57th Street).

The U.S. Navy features some of the most cutting-edge ships on the planet, and behind-the-scenes access reveals how hi-tech engineering and the latest science makes such a formidable fleet possible. This is a mashup of S03E08, "U.S. Navy's Super Ship" (Littoral Combat Ship) and S05E07, "U.S. Navy's Aircraft Carrier" (Ford-class).

The world's most advanced military planes were built with cutting-edge aerospace engineering and innovative defense technology, and special access reveals how these guardians of the sky work. This is a mashup of S07E06, "Spy Plane Declassified" (AWACS) and S07E03, "F-35 Fighter Jet."

Deadly avalanches and catastrophic flooding are ever-present threats at Whistler, British Columbia, Canada, one of the world's busiest ski resorts. New technology and cutting-edge construction methods help engineers conquer the elements to keep this mountain-top getaway safe.

The world's highest bridge, China's Beipanjiang First Bridge, impossibly spans an 1,854-foot chasm known as the Crack in the Earth, and to build this engineering marvel, experts use cutting-edge construction technology that can conquer the deadly cliffs of this rugged environment.

A state-of-the-art NATO airplane, the Airborne Warning and Control System (AWACS), is one of the most complex surveillance tools in the world, and special access inside this behemoth reveals how cutting-edge engineering and a hi-tech midair refueling system helps its crew defend against security threats.

Engineers are racing against the clock to build the world's biggest airport, Beijing Daxing International Airport. Using cutting-edge construction methods, experts put the finishing touches on a modern-day marvel that will move 100 million people in and out of Beijing every year.

The skinniest skyscraper in the world will soon become New York's third tallest, and using an innovative, gravity-defying design, this colossal megastructure is breaking all the rules of engineering. 111 West 57th Street, or the Steinway Tower, is an 84-story, 1,428-foot (435-meter) supertall residential project. 
 

The F-35 is the most advanced fighter jet on the planet, and special access into the most expensive military program ever reveals how engineers use cutting-edge technology to outfit this 1,200 mile-per-hour aircraft with a state-of-the-art stealth system.

A team of engineers is overhauling London's underground infrastructure to build a world-class super-sewer system, the Thames Tideway Tunnel. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece. 

The man-made islands of Dubai are modern-day engineering marvels that turn the Persian Gulf into high-priced real estate, and today, a team of expert engineers uses cutting-edge technology to build a brand-new city district where there was once only water. This is Bluewaters Island, a lifestyle destination featuring distinctive residential, retail, hospitality, and entertainment options. It includes the Ain Dubai, or Dubai Eye, the world's largest observation wheel at 689 feet tall.