Basic Information


Manhattan Project National Historical Park is composed of the three principal locations where work was completed as part of the Manhattan Project: Hanford, Washington; Los Alamos, New Mexico; and Oak Ridge, Tennessee.

Operating hours vary across the three park units. Learn more on our Operating Hours & Seasons page. 
Manhattan Project National Historical Park does not find a fee or sell passes. However, you can learn more about where to purchase passes on our Fees & Passes page

Entrance Fees:

Each of the park sites offers interpretive information and trip planning advice at visitor centers. 

Last updated: December 7, 2021

Contact the Park

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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