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The B Reactor National Historic Landmark

The B Reactor National Historic Landmark is the world's first full-scale plutonium production reactor and part of the Manhattan Project National Historical Park administered by the U.S. Department of Energy and the National Park Service. Sign up for a tour and learn more about the people, events, science, and engineering that led to the creation of the atomic bombs that helped bring an end to World War II.

2022 Tour Season

The U.S. Department of Energy offers free public tours of the B Reactor to people of all ages and nationalities. Tours will operate when the COVID-19 Community Levels for Benton and Franklin Counties are Low and Medium. The COVID-19 Community Level will be updated on Fridays for the following week. Tour reservations will be confirmed or cancelled by DOE at that time. Masks are welcome, but not required, at our visitor center and B Reactor. Masks are recommended on tour buses, but not required. Masks will be available at the visitor center.

Planned tour dates in 2022 include the Memorial Day, Independence Day, and Labor Day holiday weekends, and twice-daily tours on most summer Saturdays. Planned dates include:

  • May 26-31
  • June 1-4, 6-11, 13-18, 20-25, and 27-30
  • July 1-9, 11-16, 18-23, 25-30
  • August 1-6, 8-13, 15-20, 22-27, and 29-31
  • September 1-10, 12-17, 19-24, and 26-30
  • October 1, 5-8, 12-15, 19-22, and 26-29
  • November 3-5, 10-12, and 17-19

Click on the registration button on the upper right to begin the registration process.

Tour Details

  • Free of charge
  • Open to all ages
  • Open to visitors from around the world
  • Cameras, cell phones, and other recording devices are allowed
  • Food and drinks (non-alcoholic) are allowed on the bus; bottled water only inside B Reactor
  • There is no food or drink for sale at the visitor center
  • There are restrooms at the B Reactor
  • Tours begin and end at the visitor center located at 2000 Logston Blvd. Richland WA.
  • Total time commitment is 4 hours
    • Tour experience begins promptly
    • Bus ride to B Reactor is about 45 minutes with interpretation along the way
    • Visitors will have about two hours at B Reactor

Group/School Tours

A limited number of school and group tours may be available with a minimum of 20 participants on a first-come, first-served basis. Please submit requests to and include the following information:

  • Group/School Name
  • Transportation (own or have access to bus, or capability of procuring charter bus)
  • Number of participants (students + teachers/chaperones)
  • Requested tour date/time (please include alternate dates for flexibility)
  • Purpose of the tour (e.g., current course of study for students, community organization, reunion, etc.)
  • Is there a special focus for tour participants (e.g. technical or scientific interest)?

Staff will evaluate your request to determine feasibility and will contact you within one 1-2 business days. 

We may also be able to help you reserve seats for your large group as part of a scheduled public tour.   

If you have any questions, please call the visitor center, at (509) 376-1647.

Web Links:

Learn more about the world-changing history, science and engineering behind the Manhattan Project and B Reactor, as well as the history of Native American and early settler populations at the Hanford Site, with videos produced by the B Reactor Museum Association and the Atomic Heritage Foundation.

For questions or comments, please send a message to the webmaster.
Last Updated: 04/18/2021 05:25:25 AM

Learn about the Department of Energy's Vulnerability Disclosure Program