Manhattan Project National Historical Park Los Alamos National Park Service 475 20th Street, Suite C U.S. Department of the Interior Manhattan Project National Historical Park Los Alamos, NM 87544 505-661-MAPR (6277) Los Alamos, New Mexico

WAC's working the Women Army Corps at the base post office main post switchboard

In 1943, the United States government’s represent the world-changing history of the Manhattan Project built a secret laboratory at Manhattan Project at Los Alamos. Their LOS ALAMOS NATIONAL LABORATORY MAP Los Alamos, New Mexico, for a single military preservation and interpretation will show purpose—to develop the world’s first atomic visitors the scientific, social, political, and LOS ALAMOS weapons. The success of this unprecedented, cultural stories of the men and women who Original Technical Area 1 (TA-1); see reverse top-secret government program forever ushered in the atomic age, and the time in changed the world. which they lived.

Three locations comprise the park: Project Y at In Los Alamos, visitors can see the Manhattan Los Alamos, New Mexico; Site X at Oak Ridge, Project era properties on this walking tour in Tennessee; and Site W at Hanford, Washington. the city center, visit the Bradbury Science The Manhattan Project National Historical Park Museum and Los Alamos History Museum. legislation identifies 17 sites at Los Alamos National Laboratory, as well as 13 sites in downtown Los Alamos. These structures

1. POND CABIN 2. Battleship Bunker

Originally built in 1914 by Ashley Pond as an office for Built in 1944, this bunker supported implosion a private Sportman’s Club, the cabin was used by diagnostic tests for Fat Man. The Creutz implosion physicist Emilio Segrè’s group during the Manhattan test was the final systems check of The Gadget prior Project to support plutonium chemistry research. to the Trinity test. This building is known as a battleship building because the bunker’s west end is bow shaped and shielded with a steel plate. Los Alamos National Laboratory (U.S. Department of Energy) Major paved roads Other paved roads Technical Area boundary

Site number

Sites on this page not currently open to the public.

3. Slotin Building 4. gun site 5. V Site

Constructed in 1946, this building supported criticality During World War II, scientists at Gun Site In 1944 this site supported the first assembly work research. On May 21, 1946, a criticality accident conducted tests for the gun-assembled weapon related to the Fat Man weapon design. In July 1945, occurred here during a type of experiment known as designs known as Thin Man and Little Boy. V-Site was also used to assemble the high-explosives “tickling the dragon’s tail.” This accident led to the Components of Little Boy were assembled here sphere for the Trinity device, known as “the Gadget.” death of scientist Louis Slotin a few days later. before shipment to the Pacific. Little Boy was deployed over Hiroshima on August 6, 1945. National Park website http://www.nps.gov/mapr/index.htm

Bradbury Science Museum website http://www.lanl.gov/museum

Los Alamos Historical Society website http://www.losalamoshistory.org/manhattan_project.htm

DOE Manhattan Project website http://www.energy.gov/manhattan Los Alamos Downtown visitor Ice Ashley Oppenheimer Historic Sites Walking Tour center House Pond & Groves Pick up your park guide, Memorial Ashley Pond, named Sculpture get one of the special after the founder of three-part stamps in your This memorial contains the Los Alamos Ranch You can see sculptures passport, see a short film original stone from the School, is shown at of Dr. J. Robert about the Project, and pick Ranch School’s ice house, the bottom of the Oppenheimer, The Manhattan Project National Historical Park tells the story In Los Alamos, the park experience is a partnership among up your Junior Ranger which was torn down in page, then and now. scientific head of of the people, the events, and the science and engineering the Department of Energy, the National Park Service, private booklet for the kids. 1957. Project Y scientists Today it is a public the Manhattan Project, that led to the creation of the atomic bombs that helped bring landowners, and Los Alamos County. used the ice house to park and center for and Gen. Leslie Groves, an end to World War II. Structures and landscapes from that Welcome to your tour of assemble the nuclear community events. military head of the era allow visitors to explore how the creation of these In Los Alamos, the Department of Energy is developing Project Y, the Manhattan components of the Trinity Project. Here, a weapons changed the world and the United States’ role in the phased access to its properties that are currently inaccessible. Project’s Los Alamos Site! gadget, the first tested community art project. world community, and address the subsequent controversy In the interim, visitors can see the properties on this walking atomic device. and contribution of the Project to the annals of history and tour in the city center, visit the Bradbury Science Museum, the world in which we live. and the Los Alamos History Museum.

WAC Dormitory Fuller Los Alamos Stone Bathtub Lodge History Power Row

Fuller Lodge was built Museum House The homes on this in 1928 as the dining hall street were built for for the Los Alamos Ranch Built as the infirmary for This structure was built the Los Alamos Ranch School. During Project Y, the Ranch School in 1918, in 1933 to house the School and were the Lodge hosted it later served as a guest Ranch School’s adapted during the WWII cottage for Ranch School electrical generator. Cafeteria community activities Manhattan Project for for lab employees. On visitors and was Gen. Leslie After remodeling it in use by scientists. The wednesdays come Groves’ favorite place to 1944–1945, explosives street got its explore this wonderful stay in Los Alamos. This expert George name because they log building! museum features exhibits Kistiakowsky lived here. were only homes in Hans Bethe House on the Manhattan Project, town with bathtubs as well as the people of during WWII Los Alamos from ancient through contemporary times. Stone Power House

Los Alamos History Museum Hans Women's wwii Bradbury Bethe Army Corps cafeteria Science

Fuller Lodge House Dormitory This building was the Museum Bradbury Science favorite mess hall for Chemist Edwin McMillan This dormitory housed Over 60 interactive Oppenheimer Museum the military members & Groves Sculptures and physicist Hans Bethe, some of the WAC staff of the Project. Now it exhibits trace the both Nobel Prize winners, stationed here. Now it is the Los Alamos history of the Ashley Pond lived in this house. Inside, is the privately-owned Performing Arts Center. Manhattan Project, Visitor Center you will find the Harold Christian Science Reading and describe Los Agnew Cold War galleries, Room; no visitors, please. Alamos National Start Here part of the Los Alamos Laboratory's defense Restrooms History Museum. Tickets and technology are available at the research projects. Walking path History Museum. Ice House Memorial 200 ft. 400 ft.

Ashley Pond during Ashley Pond today Manhattan Project