Mega Builders
Capturing the biggest, most complex, most stressful and most dangerous engineering projects around the world, Megabuilders chronicles the most awe-inspiring construction projects in modern engineering.
1. Tunnel Vision
0.0Mar 15, 2012 · 46 min
Return to the 57-kilometer long high-speed rail tunnel in Switzerland's Gotthard Mountain range to see what it will take to finish the project by 2017.