Manhattan Project National Historical Park

The Manhattan Project was a top-secret project focused on building the world's first atomic weapons.
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. Most of this development took place in three secret communities located in Hanford, WA, Los Alamos, NM and Oak Ridge, TN. Today, you can visit these three sites that make up Manhattan Project National Historical Park.
Map showing location of park.
A film poster with the title "URANIUM! URANIUM BOOM."
Manhattan Project National Historical Park Announces New Public Program “Beyond the Bomb: Stories of the Atomic Age”
Manhattan Project National Historical Park, in partnership with Oak Ridge Associated Universities (ORAU), will be hosting a new free public program titled “Beyond the Bomb: Stories of the Atomic Age” on Thursday July 24 at 2 pm ET. Utilizing the rich history and museum collection of the ORAU Museum of Radiation and Radioactivity, this program will dive into atomic culture and innovations in medicine sparked by the Manhattan Project and expanded during the atomic age.
A tan brick building with a red metal roof and two flag poles in the front at sunset.
New Atomic Explorations programs will share the world-changing events, science, and people of the Manhattan Project
The new Atomic Explorations programs are free one-hour history and science talks offered Monday through Thursday and on Saturdays at 2:30 pm in the Manhattan Project National Historical Park Visitor Center. Programs start on Monday, June 2 and will be offered through Saturday, September 6.
A group of people stand in a semi-circle around a ranger in uniform. Open sky and hills in the background can be seen behind them.
Manhattan Project offering a ranger-led history hike up Candy Mountain
Rangers with Manhattan Project National Historical Park and Whitman Mission National Historic Site will lead a history hike up Candy Mountain on Saturday, May 17 from 9:00–11:30 am.
10 adults wearing helmets on bikes ride along a paved path lined with trees.
Local Organizations to Host Ride with a Ranger Program May 2025
Manhattan Project National Historical Park is partnering with Bike Tri-Cities and the REACH Museum to host Ride with a Ranger program on Saturday, May 3 at 9:30 am.
Historic photo of two men standing next to a mangled piece of metal equipment in the desert.
Photo by Los Alamos National Laboratory
Gray factory building like stacked boxes with single taller smokestack beneath cloudy blue skies.
Photo by NPS
Uniformed park ranger talks animatedly to visitors on a hillside overlooking a sprawling urban area.
Photo by NPS
Two-story white house with two small windows, a single door, and flat roof stands in a gravel lot.
Photo by NPS
Uniformed park ranger points to distance of fountain and trees as visitors sit enraptured.
Photo by NPS
Wooden chair sits amid light blue paneling covered in dials, meters, screens, and buttons.
Photo by NPS
Uniformed park ranger stands with youth along path lined with green broadleaved trees.
Photo by NPS