Grand Coulee Dam is the one of the world's largest concrete structures. At almost a mile long, it justly deserves the moniker "Eighth Technological Wonder of the World." Beginning in 1932, 9,000 men excavated 45 million cubic yards of rock and soil and dammed the Grand Coulee, a gorge created by the Columbia River, with 12 million cubic yards of concrete—enough to build a sidewalk the length of the equator. By the time the dam was completed in 1941, 77 men had perished and 11 towns were submerged under the newly formed Roosevelt Lake. The waters backed up behind the dam turned eastern Washington's arid soil into fertile farming land, but not without consequence: salmon-fishing stations that were a source of food and spiritual identity for Native Americans were destroyed. Half the dam was built on the Colville Indian Reservation on the north shore of the Columbia; the Colville tribes later received restitution in excess of $75 million from the U.S. government.
In 1946 most of Roosevelt Lake and the grassy and pine woodland hills surrounding it were designated the Coulee Dam National Recreation Area. Crown Point Vista, about 5 miles west of Grand Coulee on Highway 174, may have the best vantage for photographs of the dam, Roosevelt Lake, Rufus Woods Lake (below the dam), and the town of Coulee Dam.
After nightfall from Memorial Day weekend through September the dam is transformed into an unlikely entertainment complex by an extravagant, free laser-light show. After 25 years of the same show, a new one called "One River, Many Voices" debuted in 2014 with a more contemporary, high-tech style and oral histories of the dam project. The audio portion is broadcast on 90.1 FM. Show up early to get a good seat. The show starts at 10 pm Memorial Day weekend through July, 9:30 pm in August, and 8:30 pm in September.