6 most spectacular mega projects

17 October 2015,   By ,   0 Comments

 

Three Gorges Dam, China

 

2. Three Gorges Dam, China – The world’s largest dam took 17 years and $22 billion to construct this giant concrete structure. This dam measures 595 feet tall, 131 feet wide, and more than 7,600 feet long, with 32 main turbines producing electricity.