The Manhattan Project is one of the most transformative events of the 20th century. It ushered in the nuclear age with the development of the world’s first atomic bombs. The building of atomic weapons began in 1942 in three secret communities across the nation. As World War II waned in 1945, the United States dropped the atomic bombs on Hiroshima and Nagasaki, Japan—forever changing the world. Read More
A secret factory that made plutonium.
A covert lab that built the bombs.
A hidden complex that enriched uranium.
Plan your visit to one of the three park locations.
Explore the history of the Manhattan Project via its people, places, culture, and events.
Explore the life and legacy of J. Robert Oppenheimer.
Visit the park calendar to find upcoming programs and events at all three park locations.
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Find interactive maps, tours of park places, accessibility information, and much more to plan your Manhattan Project experience.
Last updated: April 3, 2023
