Season 4 - Episode Guide

Engineers race to build a city made of snow and ice in a record-breaking 15 days in Harbin, northeast China. To accomplish this herculean task, they use cutting-edge tech and the latest construction methods to turn 110,000 tons of ice into an extraordinary supercity and polar wonderland. 

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.

An expert team of engineers use hi-tech explosions and state-of-the-art drilling rigs to tear through solid granite and build an 11-mile underground tunnel, one of the longest in the world.
 

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.
 

An expert team of engineers uses the latest advances in construction and design to battle deadly earthquakes, intense heat, and punishing deadlines and build Los Angeles' new Sixth Street Bridge, a 3,500-long bridge that's tough enough to brave the world's worst disasters. The design is known as "The Ribbon of Light."

An expert team of engineers uses the latest advances in high-speed technology to build an army of the fastest and most advanced trains in the world, the Siemens Velaro; special access to the construction process reveals these record-setting trains' technological secrets. 

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. Using expert engineering and the latest tech, the crew of the MSC Bellissima relies on cutting-edge innovations to operate this 170,000-ton vessel safely and speedily.

In partnership with the NFL, we go behind the scenes to meet the elite team of engineers constructing the $2.5 billion SoFi Stadium, the new gameday home to the Los Angeles Chargers and the Los Angeles Rams. The construction team has only 45 months to complete the. state-of-the-art stadium.