{"id":"nps-mapr","slug":"manhattan-project-national-historical-park","name":"Manhattan Project National Historical Park","designation":"National Historical Park","category":"historic-site","categoryLabel":"Historic Site and Historical Park","agency":{"code":"NPS","name":"National Park Service","department":"U.S. Department of the Interior","url":"https://www.nps.gov"},"managedBy":[{"code":"NPS","name":"National Park Service","department":"U.S. Department of the Interior","url":"https://www.nps.gov","unitCode":"MAPR","designation":"National Historical Park","sourceId":"nps-mapr"}],"states":["NM","WA","TN"],"stateNames":["New Mexico","Washington","Tennessee"],"location":{"lat":35.88096,"lon":-106.30214},"bbox":[-119.7178,35.8399,-84.2552,46.6621],"acres":{"value":64,"kind":"gis-estimate","source":"Computed from the simplified boundary","note":"Approximate. The managing agency publishes official acreage."},"firstProtected":null,"established":null,"administrations":[],"designationHistory":[],"summary":"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.","summarySource":"National Park Service","guide":{},"trConnection":null,"trConnections":[],"trTypes":[],"links":{"official":"https://www.nps.gov/mapr/index.htm","social":{},"recreationGov":null,"alltrails":null,"alltrailsExplore":"https://www.alltrails.com/explore?b_tl_lat=46.6621&b_tl_lng=-119.7178&b_br_lat=35.8399&b_br_lng=-84.2552","recreationGovSearch":"https://www.recreation.gov/search?q=Manhattan%20Project%20National%20Historical%20Park","directions":"https://www.nps.gov/mapr/planyourvisit/directions.htm"},"images":[{"url":"https://www.nps.gov/common/uploads/structured_data/CE4403AA-DAFC-F3B3-C9333B9357036E13.jpg","title":"Calutron Girls at Y-12","alt":"Several women sit on stools along a long hallway full of dials and meters.","caption":"The Calutron Girls worked at the Y-12 Electromagnetic Isotope Separation Plant in Oak Ridge during the Manhattan Project.","credit":"US Department of Energy/Ed Westcott","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/87DC8664-0A66-3B76-6B9BF543D9581735.jpg","title":"Hanford B Reactor","alt":"Gray factory building like stacked boxes with single taller smokestack beneath cloudy blue skies.","caption":"The B Reactor, located along the Columbia River in Washington, was the world’s first full scale nuclear reactor.","credit":"NPS","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/88034665-FD02-40D7-B8CBF850271EC139.jpg","title":"Hanford Hike Through Time","alt":"Uniformed park ranger talks animatedly to visitors on a hillside overlooking a sprawling urban area.","caption":"A hike with a Hanford park ranger can lead to new insights and perspectives of the local area.","credit":"NPS","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/880E8585-ECDE-EB3C-34AF9A04F3EAD72E.png","title":"Los Alamos Slotin Building","alt":"Two-story white house with two small windows, a single door, and flat roof stands in a gravel lot.","caption":"Historic structures endure at Los Alamos, preserving the legacies and untold stories of this important chapter in world history.","credit":"NPS","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/883C144E-C84E-C110-BBCD64BD1F4F0656.jpg","title":"Los Alamos Ashley Pond Walk","alt":"Uniformed park ranger points to distance of fountain and trees as visitors sit enraptured.","caption":"Park rangers engage visitors in several locations across the Los Alamos area.","credit":"NPS","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/884A2FA9-FC95-36D1-FB9C52521E3FED66.jpg","title":"Oak Ridge X-10 Control Panel","alt":"Wooden chair sits amid light blue paneling covered in dials, meters, screens, and buttons.","caption":"Many locations at the Oak Ridge site can be accessed through guided tours coordinated by the US Department of Energy.","credit":"NPS","source":"NPS"},{"url":"https://www.nps.gov/common/uploads/structured_data/F6CE6F89-FA56-4D04-DCB92834298698D9.jpg","title":"Oak Ridge Family Fun","alt":"A ranger is surrounded by visitors at a security gate, awaiting a ranger-led walk.","caption":"A Walk through Wheat is one of several accessible programs for the public to enjoy in Oak Ridge.","credit":"NPS","source":"NPS"}],"activities":["Guided Tours","Junior Ranger Program","Park Film","Museum Exhibits"],"topics":["African American Heritage","Military","Science, Technology and Innovation","Tragic Events","Wars and Conflicts","World War II","Women's History"],"fees":[],"passes":[],"hours":[{"name":"Hanford Visitor Center","description":"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. To check for updates about these tours, visit http://manhattanprojectbreactor.hanford.gov/. Separate tours of the Historic Sites are offered beginning in May. For more information about these tours, visit http://tours.hanford.gov/HistoricTours/.","standardHours":{"wednesday":"9:00AM - 4:00PM","monday":"9:00AM - 4:00PM","thursday":"9:00AM - 4:00PM","sunday":"Closed","tuesday":"9:00AM - 4:00PM","friday":"9:00AM - 4:00PM","saturday":"Closed"},"exceptions":[{"name":"Thanksgiving Day","start":"2026-11-26","end":"2026-11-26","hours":{}},{"name":"Christmas Eve","start":"2026-12-24","end":"2026-12-24","hours":{}},{"name":"Christmas Day","start":"2026-12-25","end":"2026-12-25","hours":{}},{"name":"New Year's Day","start":"2027-01-01","end":"2027-01-01","hours":{}}]},{"name":"Los Alamos Visitor Center","description":"While there is currently no public access to the Department of Energy facilities in Los Alamos, walking tours are available in the town of Los Alamos. The Los Alamos Visitor Center is open Friday through Monday, 10 am to 3 pm.","standardHours":{"wednesday":"Closed","monday":"10:00AM - 3:00PM","thursday":"Closed","sunday":"10:00AM - 3:00PM","tuesday":"Closed","friday":"10:00AM - 3:00PM","saturday":"10:00AM - 3:00PM"},"exceptions":[]},{"name":"Oak Ridge Visitor Center","description":"The Oak Ridge Visitor Center is located within the Children's Museum of Oak Ridge. Here you are able to speak with National Park Service rangers, watch a short film on the Manhattan Project, and get literature on Manhattan Project-related historic sites throughout Oak Ridge. Visitor Center services are limited on Sundays, but brochures, maps, and site films are available.","standardHours":{"wednesday":"10:00AM - 4:00PM","monday":"Closed","thursday":"10:00AM - 4:00PM","sunday":"1:00PM - 4:00PM","tuesday":"10:00AM - 4:00PM","friday":"10:00AM - 4:00PM","saturday":"10:00AM - 4:00PM"},"exceptions":[{"name":"Children's Museum of Oak Ridge Closed","start":"2026-11-20","end":"2026-11-20","hours":{"friday":"Closed"}},{"name":"Thanksgiving Day","start":"2026-11-26","end":"2026-11-26","hours":{}},{"name":"Christmas Eve and Day","start":"2026-12-24","end":"2026-12-25","hours":{}},{"name":"New Year's Eve and Day","start":"2026-12-31","end":"2027-01-01","hours":{}},{"name":"Memorial Day","start":"2027-05-31","end":"2027-05-31","hours":{}},{"name":"Independence Day","start":"2027-07-04","end":"2027-07-04","hours":{}}]}],"directions":"Manhattan 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 & Transportation page.","weatherInfo":"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.","contacts":{"phone":"Hanford: 509.376.1647","email":"mapr_information@nps.gov"},"visitorCenters":[{"name":"Hanford Visitor Center","description":"Located in the city of Richland, this is the main visitor contact point for the Manhattan Project National Historical Park in the Tri-Cities.","url":"https://www.nps.gov/mapr/planyourvisit/hours.htm#CP_JUMP_5178032","lat":46.31855499344233,"lon":-119.30042005517134},{"name":"Los Alamos Visitor Center","description":"At the Los Alamos Visitor Center you can speak with park rangers, tour exhibits about the Manhattan Project in Los Alamos, and learn more about where to go in town.","url":"https://www.nps.gov/mapr/planyourvisit/hours.htm#CP_JUMP_5178017","lat":35.88084805977088,"lon":-106.30214686319755},{"name":"Oak Ridge Visitor Center","description":"The Oak Ridge Visitor Center is located within the Children's Museum of Oak Ridge. Here you are able to speak with National Park Service rangers, watch a short film on the Manhattan Project, and get literature on Manhattan Project-related historic sites throughout Oak Ridge. Visitor Center services are limited on Sundays, but brochures, maps, and site films are available.","url":"https://www.nps.gov/mapr/planyourvisit/hours.htm#CP_JUMP_5178012","lat":36.02300662077892,"lon":-84.27178345265156},{"name":"Tri-Cities Visitor Center","description":"Visit Tri-Cities is the tourism information center for the local area. This is a great place to stop by for helpful trip-planning advice for visiting the park and numerous other attractions in the Tri-Cities. The helpful staff can provide you with itineraries for visits to the Tri-Cities region and suggest entertainment, lodging, and dining options. You may also purchase souvenir items and stamp your national parks passport here. Visit Tri-Cities may be reached at 509-735-8486.","url":"http://www.visittri-cities.com/","lat":46.21755281948724,"lon":-119.21796600016415}],"campgrounds":[],"thingsToDo":[],"nearby":[{"slug":"bandelier-national-monument","km":12},{"slug":"valles-caldera-national-preserve","km":20},{"slug":"kasha-katuwe-tent-rocks-national-monument","km":27},{"slug":"jemez-national-recreation-area","km":35},{"slug":"santa-fe-national-forest","km":38},{"slug":"pecos-national-historical-park","km":68}],"hasBoundary":true,"boundarySource":{"name":"NPS Land Resources Division","url":"https://irma.nps.gov/DataStore/Reference/Profile/2224545"},"sources":[{"name":"NPS Data API","url":"https://developer.nps.gov/api/v1/parks?parkCode=mapr"},{"name":"NPS Land Resources Division boundaries","url":"https://services1.arcgis.com/fBc8EJBxQRMcHlei/arcgis/rest/services/NPS_Land_Resources_Division_Boundary_and_Tract_Data_Service/FeatureServer/2"}],"editorialStatus":"draft","synced":"2026-11-09T02:12:45.618Z","alerts":[],"url":"https://directory.labs.trlibrary.com/sites/manhattan-project-national-historical-park/","boundaryUrl":"https://directory.labs.trlibrary.com/boundaries/manhattan-project-national-historical-park.geojson"}