Dawn of the Atomic Age

This site tells the story about the people, events, science, and engineering that led to the creation of the atomic bomb, which helped end World War II.

Image of historic entry gate in Los Alamos, New Mexico

Los Alamos

Did you know this was located in Los Alamos, New Mexico?

Calutron Girls at Oak Ridge Site

Oak Ridge

Find out more about the atomic age and the Manhattan Project site, in Tennessee.

Image of Hanford Reactor


Find out more about the Manhattan Project site in Hanford, Washington

Guided Tours

Guided Tours

Depending on the location, guided tours are available.

Last updated: August 30, 2017

Contact the Park

Mailing Address:

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

Denver, CO 80225-0287


(505) 661-6277
This phone number is for the Los Alamos Unit Visitor Center. You may also contact the Oak Ridge Unit Visitor Center at (865) 482-1942, or the Hanford Unit Visitor Center at (509) 376-1647.

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