For over a decade, the Department of Energy and National Park Service, in cooperation with other Federal agencies, state and local governments, and other stakeholders, pursued the possibility of including the Department’s most significant Manhattan Project properties within a Manhattan Project National Historical Park (MAPR). After numerous studies and several draft bills, Congress passed the National Defense Authorization Act of 2015, which included provisions authorizing the Park to be located at three sites: Oak Ridge, Tennessee; Hanford, Washington; and Los Alamos, New Mexico. President Obama signed the National Defense Authorization Act into law on December 19, 2014.
On November 10, 2015, Secretary of the Interior Sally Jewell and Secretary of Energy Ernest Moniz signed the Memorandum of Agreement between the two agencies defining the respective roles in creating and managing the park. The agreement included provisions for enhanced public access, management, interpretation, and historic preservation. With the signing, the Manhattan Project National Historical Park officially was established.
Visit MAPR Website
Manhattan Project National Historical Park - Los Alamos offers one hour walking tours at 11:30 a.m. on the days they are open. To attend this free event, meet outside the Visitor Center near Ashley Pond.
Interested in supporting the park? Learn more about the Friends of MAPR-LA nonprofit.
Visitor Center
Friday - Monday 10 a.m. - 3 p.m.
Tuesday - ThursdayClosed Note: Aside from the NPS Visitor Center, much of the property is open at all areas of the day, as this is the downtown area of Los Alamos. You can still visit the sites even if the NPS Visitor Center is closed.
Free