Impossible Engineering

For NASA to send a person Mars, they will need to build the most powerful rocket ever built. Discover inside story behind the Orion Space Craft, an engineering feat designed to sustain astronauts for years in one of the universe's harshest environments.

How did engineers build the tallest bridge on the planet? As tall as a skyscraper, the Millau Viaduct braves deadly wind speeds over an immense abyss, and we go inside the story behind this modern wonder.

The AT&T Stadium in Texas is home to the Dallas Cowboys and the world's largest retractable roof. This $1.2 billion stadium can house over 100,000 fans, and we'll go inside how this engineering feat was built.

A look at how engineers reshaped a river to build China's Three Gorges Dam, the largest and heaviest concrete structure on earth.

Exploring how engineers move mountains to build the longest and deepest rail tunnel; a look at how 25 million tons of rock were moved to build this modern wonder.

The construction of the world's largest cruise ship is spotlighted.

Virginia Class Submarine: The Virginia-class submarine is the most advanced nuclear-powered fast attack submarine ever built for the US Navy. Hear how this 7,800-tonne beast was made.

The Shard: The Shard became the tallest building in London upon its completion in 2012. Standing over 1,000ft high, hear how this 95-storey skyscraper was conceived and constructed.