Hanford Visitor Centers & Basic Info

A color photo of a building that says Manhattan Project National Historical Park on it.
Look for the red roof of the visitor center as you drive along Hwy 240.



Start with 2 Visitor Centers in the Tri-Cities



Basic Information about Hanford Unit

We offer a traditional passport stamp as well as a unique three-part stamp. Travel to our visitor centers in Los Alamos, Oak Ridge, and the Tri-Cities to receive one-third of a stamp. By the end of your journey, you will have a whole stamp.

  • Park calendar: Visit our park calendar to learn about ranger programs and special events at each of the park's locations: Los Alamos, New Mexico, Oak Ridge, Tennessee, and the Tri-Cities, Washington.
  • Hanford Places to Go: Visit the Hanford Places to Go page to see all the places related to the Manhattan Project that you can explore. This includes our visitor center, historic facilities with the Department of Energy, and historic sites and educational centers around the Tri-Cities. 
  • Hanford Things to Do:  Visit the Hanford Things to Do page to see all the activities related to the Manhattan Project. This includes guided and self-guided tours. It also includes programs and activities with our park, the Department of Energy, and numerous organizations around the Tri-Cities. 
  • Self-guided Tours with our App: Download the National Park Service app and go to the Manhattan Project National Historical Park. There, you will find information about all the places you can visit as well as information on self-guided tours.
  • Junior Ranger Program: Our Junior Ranger book is available in-person at our visitor center or on our website. Kids of all ages can complete the book's activities and earn a Junior Ranger certificate, badge, and patch.

Many of the park’s historic properties are located “behind the fence” on secure Department of Energy nuclear reservations. Public access is only permitted though public tours facilitated by the Department of Energy. The Department of Energy offers two tours: B Reactor and Pre-War Historic Sites.

  • Outside Safety: The Tri-Cities may be very hot and dry in the summertime. Drink plenty of water, wear a hat and sunglasses, and use sunscreen.
  • Weather: Check the weather and current forecast for the Tri-Cities before you set out for the day.
  • Alerts: Check out any alerts the park may have.

If you are planning to explore areas of the park that are closed to pets, we recommend that you contact a local pet care provider. Commercial kennels and pet sitters are available in surrounding communities. Please check local listings. Reservations are strongly advised and may be required. The National Park Service has a national policy on service animals that applies to all parks which can be found here:  Service Animals - Accessibility (U.S. National Park Service) (nps.gov) .For more information about pets in parks, visit the National Park Pets website

Free public WiFi is available at the Hanford Visitor Center but not at the B-Reactor or at any of the historic structures on the tour route. Cellular service is available in the Tri-Cities.


Last updated: March 21, 2024

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Contact Info

Mailing Address:

Manhattan Project National Historical Park
c/o NPS Intermountain Regional Office
P.O. Box 25287

Denver, CO 80225-0287


Hanford: 509.376.1647
Los Alamos: 505.661.6277
Oak Ridge: 865.482.1942

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