The biggest dam in the world

Three Gorges Dam, in Hubei Province, China, will be the world's largest dam and largest concrete structure and create the largest lake. The dam will be built across the 3 Gorges section of the Yangtze River. It will be a 610-foot high wall running about 1.3 miles from bank to bank. Requiring 12 years and tens of thousands of workers to complete, the dam will cost $29 billion, and will create a 370 mile long lake, a distance equal to nearly half the length of California, that will be visible from Earth orbit.