Frequently Asked Questions

A man speaks on the telephone in an office with photos and a calendar on the wall.
Answering questions in Oak Ridge, 1944.


Like the Manhattan Project, Manhattan Project National Historical Park is complicated. The park is located in three states (NM, TN, and WA) and is co-managed with the Department of Energy. This website offers a lot of great trip planning information to make your trip planning easier. Please visit Plan Your Visit for helpful information to plan your visit to one or all three park locations. The frequently asked questions below focus on the questions that the media and other interested organizations frequently ask park staff. If you have additional questions about the park, please contact us.

FAQs about the Manhattan Project



FAQs about Manhattan Project National Historical Park



FAQs about Hanford, Washington



FAQs about Los Alamos, New Mexico



FAQs about Oak Ridge, Tennessee


Last updated: June 23, 2023

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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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