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Manhattan Project National Historical Park was created by Congress in 2014. It includes sites in Los Alamos, N.M., Oak Ridge, Tenn., and Hanford that played key roles in developing the atomic bomb.

The park is a partnership between the U.S. Department of Energy, which owns the sites, and the National Park Service, in charge of interpreting the history.
The park tells the story of the secret project that birthed the atom bomb, a collaboration of scientists, industry and the military that employed as many as 13,000 people.

A 2016 document lists main themes. Among them: the “secret cities” created by the Manhattan Project; the revolutionary science and technology behind the race to create the first atomic weapons; and consideration of the scientific advances and the human and environmental costs of the nuclear age.

Due to national security and clean-up requirements, some park sites are not currently open to the public. Open sites are accessed by bus tours.

How to tour Hanford
B Reactor tour information:

Town sites and structures tours: