Impossible Engineering

Expires August 6

2015

48m

Discover the science behind modern-day engineering marvels and the stories of historical trailblazers who made the impossible, possible.

Switzerland's Gotthard Base Tunnel cuts straight through the heart of the Alps, running 2.5 km below the mountains at its deepest.

Designed to carry astronauts into deep space, the Orion spacecraft is crucial to NASA's planned journey to Mars.

Opened in 2013, the Shard is a unique pyramid of glass that has radically altered London's skyline.

The Three Gorges Dam produces more power than any hydro-electric dam ever built and is the largest and heaviest concrete structure on Earth.

Available August 4

Weighing in at 7800 tonnes, the first Virginia-class submarine set a new benchmark as the US Navy's most advanced nuclear-powered submarine.

Available August 11

Royal Caribbean's mega cruise ships, with capacity for up to 9,000 passengers and crew, take maritime engineering to a new level.

Episodes