J. Robert Oppenheimer and Gen. Leslie Groves at the Trinity Test Site.
Manhattan Project National Historical Park
National Historical Park · NM, WA, TN
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.
Park report
Current Alerts
How this is rated
Good: no active alerts or closuresNo active alerts
Entrance Fee
How this is rated
Good: free entryFree — no entrance fee
Visitor Centers
Good4 visitor centers
Activities Available
How this is rated
Good: many activities available4 activities
Park Name
InfoManhattan Project National Historical Park
Designation
InfoNational Historical Park
State(s)
InfoNM, WA, TN
Phone
InfoHanford: 509.376.1647
mapr_information@nps.gov
Operating Hours
InfoAccess to the Hanford B Reactor is by tour only. Separate tours of the Historic Sites are also offered. For more information about tours of the B Reactor, visit http://manhattanprojectbreactor.hanford.gov/. For more information about tours of the historic sites, visit http://tours.hanford.gov/HistoricTours/.
Campgrounds
InfoNo campgrounds listed
Visitor Center: Hanford Visitor Center
InfoSee park for hours
Visitor Center: Los Alamos Visitor Center
InfoSee park for hours
Visitor Center: Oak Ridge Visitor Center
InfoSee park for hours
Activity: Guided Tours
InfoAvailable
Activity: Junior Ranger Program
InfoAvailable
Activity: Park Film
InfoAvailable
Activity: Museum Exhibits
InfoAvailable
Theme: African American Heritage
InfoFeatured at this park
Theme: Military
InfoFeatured at this park
Theme: Science, Technology and Innovation
InfoFeatured at this park
Theme: Tragic Events
InfoFeatured at this park
Theme: Wars and Conflicts
InfoFeatured at this park
Theme: World War II
InfoFeatured at this park
Theme: Women's History
InfoFeatured at this park
Weather Info
InfoThe 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.
Getting There
InfoManhattan 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 & Transp
GPS Coordinates
Info35.8810° N, -106.3021° W
Data from official federal recreation records. Updated periodically. Park conditions change — always verify with the park before visiting. Verify on official park website