Visit Hanford, Washington

A black and white photo of a building that reads High School on a plaque. A black and white photo of a building that reads High School on a plaque.

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Hanford High School was converted into offices for the Manhattan Project.

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Visitors can see Hanford High School through a guided tour.


The Manhattan Project at Hanford

Nuclear reactors at Hanford (now the Hanford Site) produced plutonium for the Manhattan Project to fuel the first atomic test and the Fat Man atomic bomb dropped on Nagasaki, Japan on August 9, 1945. The story of the Manhattan Project at Hanford encompasses historic facilities and educational centers with the National Park Service, the US Department of Energy and the communities where Hanford workers and their families lived, which are all part of the Tri-Cities region today.

Explore Hanford and the Tri-Cities

Photo of a building outside with a sign that reads "Manhattan Project National Historical Park."
Visitor Center & Basic Info

Start your adventure with our visitor center in Richland, WA.

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Directions & Map

Get directions to our visitor center.

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Places to Go

Find out about all the places in the Tri-Cities region with connections to the Manhattan Project including historic sites and museums.

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Things to Do

Explore the Manhattan Project with activities throughout the Tri-Cities region.

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US Department of Energy Tours

Learn about the US Department of Energy's guided tours of the B Reactor and buildings that predate the Manhattan Project.

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Trip Ideas

Learn about trip ideas at Hanford that last from a few hours to all day.

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Nearby Attractions

Explore attractions in the region including state and national parks.

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Eat & Sleep

Find dining and lodging options in and around Hanford.


Let our park app be your guide

Our park app is an explorer's best friend. Find all the places and activities within the Tri-Cities region related to the Manhattan Project. This includes guided tours with the US Department of Energy at the Hanford Site. It also includes the many historic sites and educational centers within communities like Richland, which the government planned and operated for Hanford Workers, and the neighboring communities of West Richland, Kennewick, and Pasco.


Last updated: November 16, 2023

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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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