Manhattan Project National Historical Park

National Park Service, New Mexico.

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.


Directions

Manhattan Project National Historical Park is located in three states: New Mexico, Tennessee, and Washington. For more information on accessing each of these three units, visit our Directions & Transportation page.

Additional Information

  • Manhattan Project National Historical Park Map
  • Manhattan Project National Historical Park Official Website

Photo Gallery

  • Oppenheimer and Groves at Trinity Test SiteJ. Robert Oppenheimer and Gen. Leslie Groves at the Trinity Test Site.
  • B Reactor Under ConstructionConstructing the B Reactor, the world's first full scale nuclear reactor, took hard work and ingenuity.
  • Top Secret!Manhattan Project Mobile App
  • Kwage Mesa PanoramaThe view from the Kwage Mesa Trail in Los Alamos shows the canyons and mesas typical to the area.
  • Groves and Oppenheimer at Trinity SiteJ. Robert Oppenheimer and Gen. Leslie Groves at the Trinity Test Site.
  • International Friendship BellThe International Friendship Bell in Oakridge Tennessee, symbolizes peace and reconciliation between the United States and Japan.
  • International Friendship BellThe International Friendship Bell in Oakridge Tennessee, symbolizes peace and reconciliation between the United States and Japan.
  • B Reactor Under ConstructionConstructing the B Reactor, the world's first full scale nuclear reactor, took hard work and ingenuity.
  • International Friendship BellThe International Friendship Bell in Oakridge Tennessee, symbolizes peace and reconciliation between the United States and Japan.
  • International Friendship BellThe International Friendship Bell in Oakridge Tennessee, symbolizes peace and reconciliation between the United States and Japan.
  • Ashley PondAshley Pond has been a central part of the Los Alamos community since the days before the Manhattan Project.
  • Hanford B ReactorThe B Reactor, located along the Columbia River in Washington, was the world’s first full scale nuclear reactor.
  • Hanford Hike Through TimeA hike with a Hanford park ranger can lead to new insights and perspectives of the local area.
  • Los Alamos Ashley Pond WalkPark rangers engage visitors in several locations across the Los Alamos area.
  • Oak Ridge X-10 Control PanelMany locations at the Oak Ridge site can be accessed through guided tours coordinated by the US Department of Energy.
  • Oak Ridge Family FunAn outing with Oak Ridge park rangers is fun for the whole family.

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