Season 6 (2012)

Tunnel Vision
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March 15, 2012 • 46m

Return to the 57-kilometer long high-speed rail tunnel in Switzerland's Gotthard Mountain range to see what it will take to finish...Read more

Extreme Surf Machine
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March 22, 2012 • 46m

Returning to Tenerife to check on the world's best water park which now seems destined to remain dry after numerous problems.

Race to the Games
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March 29, 2012 • 46m

Crews race against the clock to finish an important venue and signature landmark for the 2012 London Olympics.

Tunneling Through History
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February 5, 2012 • 46m

Mega Builders return to Istanbul to update the Marmaray rapid-transit project, which continues to have delays.

Quake-Proof Bridge
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February 12, 2012 • 46m

Six years after piles were pounded into the muddy bottom of San Francisco Bay the new Bay Bridge is about to be topped off.

Ice Hotel Bigger Colder
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February 19, 2012 • 46m

Inside a famous Swedish hotel which is constructed from 10,000 tonnes of ice and 30,000 tonnes of snow, and boasts a frozen bar and cinema screen.