Several women sit on stools along a long hallway full of dials and meters.

National Historical Park · New Mexico, Washington +1 more

Manhattan Project National Historical Park

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.

Share

Things to do

  • Guided Tours
  • Junior Ranger Program
  • Park Film
  • Museum Exhibits

Weather & when to go

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.

Operating hours

Hanford Visitor Center

Access 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/.

Los Alamos Visitor Center

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.

Oak Ridge Visitor Center

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.

FAQ

Is Manhattan Project National Historical Park free to visit?
Manhattan Project National Historical Park does not charge a standard entrance fee. Check the official NPS page for the latest details on any activity or permit fees before you go.
What are the hours at Manhattan Project National Historical Park?
Access 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/.
Do I need a reservation for Manhattan Project National Historical Park?
No timed-entry reservation is currently required to enter Manhattan Project National Historical Park. Campgrounds and permits may still need to be booked separately on Recreation.gov.