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The Grand Coulée Dam, Washington. This dam is mind-boggling huge.....it is 550 feet high and a mile wide. It was the world's largest concrete structure from 1942 to 2009.

The Grand Coulée Dam, Washington. This dam is mind-boggling huge.....it is 550 feet high and a mile wide. It was the world's largest concrete structure from 1942 to 2009.

Grand Coulee Dam - laser light show. View and hear the show from the park at the base of the dam.    Lay out a blanket and enjoy!

Grand Coulee Dam - laser light show. View and hear the show from the park at the base of the dam. Lay out a blanket and enjoy!

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Grand Coulee Dam Visitor Information

Grand Coulee Dam Visitor Information

Grand Coulee Dam Motels & Grand Coulee Dam Vacation Information: Grand Coulee Dam WA 99133

Grand Coulee Dam Motels & Grand Coulee Dam Vacation Information: Grand Coulee Dam WA 99133