Atlanta's Mercedes-Benz Stadium is the world's most advanced stadium and features the most complex retractable roof ever built. As the team races to finish the $1.6 billion arena for the NFL season, it faces deadly winds and unique engineering challenges.

Expert engineers try to build one of the largest and most advanced cruise ships in the world. This goliath ship will carry over 5,000 passengers and pushes the boundaries of ship design and construction.

Engineers build a cutting-edge skyscraper in a busy area of New York City. This impossibly tall and thin tower must be built with a strange diagonal framework, posing unique challenges for some of the world's best builders.

Engineers race to complete the longest suspension bridge in the Arctic Circle before the brutal winter arrives.

Venice's new storm wall is one of the strongest in the world, a 330-ton behemoth that protects the historic city from disastrous flooding.

Engineers are building a ground-breaking new railway line in Copenhagen that features 22 miles of tunnels, 17 brand-new stations, and cutting-edge driverless trains.

The world's tallest church has taken more than 140 years to build, and today, engineers are nearing completion of Barcelona's Sagrada Familia, designed by maverick architect Antoni Gaudi.

Engineers are breaking records as they build Beijing's tallest skyscraper, a 1500-foot-tall behemoth designed to withstand one of the world's most dangerous earthquake zones.

Engineers brave the cold and nights of the Arctic Circle to build one of the largest ice hotels in the world. Using cutting-edge tech, they'll move 15,000 tons of snow and ice to construct this modern marvel in just six weeks.

When an elite team of engineers race to build a record-breaking roller coaster in just 16 months, they use brand-new technology and the latest construction methods to turn 1,500 tons of steel into the fastest dive roller coaster in the world.

A team of expert engineers must complete a brand-new bridge in just three months, and using cutting-edge tech and the latest construction methods, this innovative megastructure has been build to brave the deadly winter weather of the Great North.

The Las Vegas High Roller is the world's tallest Ferris Wheel, and expert engineers use cutting-edge tech and the latest construction methods to build this 550-foot marvel, one of the great wonders of Sin City.

Expert engineers use cutting-edge tech to build and operate what's known as the Ferrari of Trains.

As engineers race to build a brand-new train tunnel beneath the Alps, they use cutting-edge tech and the latest construction methods to build the world's longest underground railroad in some of the most dangerous conditions on earth.

The Antonov 124 is one of the biggest airplanes in the world, and as its cutting-edge engineering and immense size help it carry impossibly heavy cargo, the plane's crew races the clock to make critical international deliveries on schedule.

New York's Central Park Tower is the second tallest building in the US, and as engineers and builders race to complete this 1,550-foot-tall mega build, they use cutting-edge science and engineering to battle high altitudes and brutal weather.

In Chicago, engineers race against the clock to build a supertall skyscraper that will be one of the most luxurious towers in the world. They must battle fierce Arctic-like winds and extreme heights to add this new centerpiece to the famous skyline.

As expert engineers race against the clock to build the biggest bridge in Ireland, they use cutting-edge tech and innovative construction methods in a fight against unpredictable weather and deadly heights to complete the massive project on time.

Expert engineers are racing to build a 2,000-foot-tall skyscraper that will be the third-tallest building in the world, but first, they must use cutting-edge tech and innovative construction to finish this record-breaking megastructure.

A team of expert engineers must build the world's largest cargo ship in just 12 months, and to do so, they use cutting-edge tech and the latest construction methods in a race to complete the massive project on schedule.

An innovative new building seems to defy physics and float in mid-air, and to build it, expert engineers use cutting-edge technology and the latest construction methods in a high-stakes race against the clock.

An expert team of engineers are using cutting-edge tech and the latest construction methods to build Los Angeles's biggest engineering project ever: a series of brand-new subway lines in durable, earthquake-proof tunnels.

The world's best shipbuilders join forces to build a state-of-the-art ship that comes equipped with two submarines, and using cutting-edge engineering, it can brave the Arctic Ocean's worst winters and deadliest seas.

Expert engineering and cutting-edge technology come together to build one of the world's wildest roller coasters, and special behind-the-scenes access reveals how new innovations make this high-speed thrill ride possible.

One of the world's largest and most advanced cruise ships must brave some of the roughest seas on earth, and using expert engineering and the latest tech, its crew relies on cutting-edge innovations to operate this 170,000 ton vessel safely and speedily.