Impossible Engineering

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S2 E5 World's Longest Tunnel

本集简介

How did engineers move mountains to build the longest and deepest rail tunnel on the planet? Discover how 25 million tons of rock were moved to build this modern wonder. The Gotthard Base Tunnel has a length of 35.47 miles through the Alps in Switzerland. It opened on 1 June 2016.

上一集

2016/04/06 S2 E4 10

World's Most Powerful Dam

China's Three Gorges Dam is the largest and heaviest concrete structure on earth, and it produces more power than any hydroelectric dam ever built. Discover how engineers reshaped a river to accomplish this incredible engineering feat.

下一集

2016/04/20 S2 E6 9

World's Biggest Cruise Ship

Go inside the largest cruise ship on the planet: MS Harmony of the Seas is an Oasis-class cruise ship; a massive ship that's 1,181 feet long and a staggering 227,000 tons.

当前季

2016-03-16

哇，窗口太小啦

Impossible Engineering