Manhattan Project National Historical Park is a National Historical Park in New Mexico, Washington, Tennessee. The NPS currently lists 0 active alerts, 0 campgrounds and 4 visitor centers, and no entrance fee.
“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.”
Active alerts
0
Closures
0
Campgrounds
0
Visitor centers
4
Current alerts and closures
The NPS listed no active alerts for this park in the Oct 28, 2026 snapshot. Conditions can change; check current conditions on nps.gov before you go.
Entrance fees and passes
This site has no entrance fee, according to NPS fee data.
The Indian Pueblo Cultural Center preserves Pueblo culture, their accomplishments, and evolving history of the Pueblo people. The center located in Albuquerque on land owned by the 19 Pueblos and governed by the 19 Pueblos District.
The US Department of Energy provides guided tours of the B Reactor. These tours provide a glimpse into the science and technology that made plutonium production possible on an industrial scale and helped launch the nuclear age.
The Hanford Visitor Center is open Monday - Friday 9:00 AM-4:00 PM. Access to the Hanford B Reactor is suspended due to major construction projects.
Hanford Visitor Center
Day
Hours
Monday
9:00AM - 4:00PM
Tuesday
9:00AM - 4:00PM
Wednesday
9:00AM - 4:00PM
Thursday
9:00AM - 4:00PM
Friday
9:00AM - 4:00PM
Saturday
Closed
Sunday
Closed
Weather: The Manhattan Project National Historical Park has units in Hanford, WA, Los Alamos, NM, and Oak Ridge, TN. Check local weather conditions at each unit before you visit.
Data: National Park Service (NPS) Data API, U.S. Department of the Interior (developer.nps.gov). This product uses the NPS Data API but is not endorsed or certified by the National Park Service. The National Park Service and the U.S. Department of the Interior do not endorse OpenParks. Photos are NPS images shown with their original credits; park descriptions are short excerpts credited to the NPS. Always confirm current conditions on nps.gov before you travel.