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.

A child wearing a green polo shirt interacts with an exhibit.

Top Ten Tips

Tips to make the most out of your visit to Manhattan Project NHP.

Mobile phone with mockup of app

New Mobile App

Experience and explore places with unique ties to the Manhattan Project. Download the app to learn more.

Several workers walking away from large industrial complex

Stakeholder Engagement

Learn more about Manhattan Project NHP's Stakeholder Engagement Project.

A large industrial building on an arid plain.

Hanford, WA

A secret factory that made plutonium.

A white-sided building with a green door sits on paved ground.

Los Alamos, NM

A covert lab that built the bombs.

Color photo of a large reactor face with mannequins in white suits.

Oak Ridge, TN

A hidden complex that enriched uranium.

Last updated: August 5, 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


(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.

Contact Us