Overview
The world’s largest concrete dam–and the largest concrete structure in the world–lies on the Columbia River in the State of Washington. B uilt in 1931, it is also one of the largest hydroelectric power plants in the world.
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1 - 1Grand Coulee Dam December 10, 1993 -
1 - 2The Empire State Building January 21, 1994 -
1 - 3The Panama Canal March 04, 1994 -
1 - 4Cruise Ships March 20, 1994 -
1 - 5Transatlantic Cable March 27, 1994 -
1 - 6Mt. Rushmore. March 13, 1994
