Register now to tour the Manhattan Project National Historical Park

Admission is free but spots are limited

February 13, 2023


Public tours of the Manhattan Project National Historical Park in Los Alamos will take place on March 29 and 30. Tour registration will begin Feb. 15 at noon MST.

Each day will have two tours with 25 people each, and registration for the free tours fills up quickly.

On Los Alamos National Laboratory property, participants will see and learn about the original Pond Cabin, which served as an office for physicist Emilio Segrè’s Radioactivity Group; a battleship bunker that protected staff during explosives testing; and the site of Louis Slotin’s deadly criticality accident.

Tour requirements

Tour participants must be at least 18 years of age, U.S. citizens, and able to provide proof of citizenship at the tour check-in. Click here for the full tour requirements.

Please note that public tours are not open to Laboratory employees.  

These “behind-the-fence” tours are hosted by the Laboratory in collaboration with the Los Alamos Field Office of the Department of Energy’s National Nuclear Security Administration and the National Park Service. As an active national security laboratory, Los Alamos National Laboratory has specific entry requirements for visitors. Details will be provided to registrants; compliance is necessary to avoid being turned away from the tour.

Register now

Visit the Manhattan Project National Historical Park’s new website, MAPR@LANL, for tour details and the registration link.

These tours of the park complement the 2023 Trinity Site Open House, hosted on April 1 by the White Sands Missile Range.

Future tours

Visit MAPR@LANL, the National Park Service’s Manhattan Project National Historical Park website and the Los Alamos History Museum for more information on the park. Future tour opportunities, as well as ongoing park updates, will be posted to the MAPR@LANL website.