Our Megastructures DVD Collection takes an eye-popping look at some of the greatest structures and machines ever created. Get inside these superstructures, and uncover the cogs, gears, bells, and whistles that make them work. This three-volume set includes the episodes "Super Copters," "Super Subs," and "Super Rigs."

Super Copters: Since their breakthrough invention decades after the airplane, helicopters have been vital - used for surveillance, rescue and as a weapon of war. The latest super copters are one of an advanced breed of machines - built to fly fast and silently to places helicopters could never go before. Incredible technology is making these super copters much more impervious to attack, with Kevlar and other advanced composite materials strengthening the body - while keeping it lightweight. Using live action, re-creations, amazing archival footage and advanced CGI, we marvel at the creation of today's 'super copters' - extraordinary multipurpose helicopters for the twenty-first century.

Super Rigs: As the world's insatiable need for oil and gas grows, companies are going deeper into more hostile environments than ever before. It's a never-ending race that's pushing technology to its breaking point. In the Gulf of Mexico, one of the largest ultra-deep water rigs in the world is towed into place just in time for hurricane season. In the North Atlantic, a gigantic offshore platform stands in the path of the annual iceberg migration. Watch as we rip apart the largest oil rigs on the planet to reveal the secrets of these amazing technological achievements and discover if they can survive Mother Nature's most violent forces.

Super Subs: Super Subs deconstructs a mystery machine that few of us have seen up close, and focuses on the latest-generation submarine, the USS Texas, as well as other international subs. Through exclusive access to training missions, CGI and re-creation, Super Subs will show how today’s submarines defy the imagination. Most of us know subs more for their terrifying disasters than their achievements. We investigate what happened in some historic accidents and show how new technologies seek to prevent future calamities - even as submarines take on new and more perilous missions.

• 3 discs; 156 minutes
• © 2010