Building Giants

Atlanta's Mercedes-Benz Stadium, the world's most advanced stadium, features the most complex retractable roof ever built; the team races to finish the $1.6 billion arena for the NFL season.

In Venice, Italy, a new 330-ton storm wall is one of the strongest in the world, and it was built to protect the historic city from disastrous flooding.

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

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.

Atlanta's Mercedes-Benz Stadium, the world's most advanced stadium, features the most complex retractable roof ever built; the team races to finish the $1.6 billion arena for the NFL season.