The Grand Coulee Dam

Called the eighth wonder of the world, The Grand Coulee Dam, on the Columbia River, was built from enough concrete to build a sidewalk 4 feet wide, 4 inches thick, and 50,000 miles in lenght, which is long enough to wrap around the world twice. The project was FDR's most successful 'new deal' project, the dam is 550 feet high and 450 feet thick at it's base and nearly a mile across. The dam was completed in 1942 at the cost of many millions of dollars and 77 lives.
Coulee Damn