Hanford: Tour Behind the Fence

During World War II, the top-secret Manhattan Project sites maintained high levels of security. That legacy continues today in Hanford. Nearly all of the park’s historic properties are located “behind the fence” on secure federal Department of Energy reservations. Public access is only permitted though public tours facilitated by the US Department of Energy.

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    Last updated: January 10, 2022

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    Contact Info

    Mailing Address:

    Manhattan Project National Historical Park
    c/o NPS Intermountain Regional Office
    P.O. Box 25287

    Denver, CO 80225-0287


    Hanford: 509.376.1647
    Los Alamos: 505.661.6277
    Oak Ridge: 865.482.1942

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