Basic Information

Manhattan Project National Historical Park is composed of the three principal locations where work was completed as part of the Manhattan Project: Hanford, Washington; Los Alamos, New Mexico; and Oak Ridge, Tennessee. Click on the images below to go to each site's planning page. Scroll down for basic info on each site.

Color photo of an industrial looking building with sun setting.
Hanford, Washington

A secret factory that made plutonium.

A white building with a big sign that reads, "Los Alamos Project Main Gate"
Los Alamos, New Mexico

A covert lab that built the bombs.

A small white chapel with a tall steeple on a grassy hill with trees behind it and an historical mar
Oak Ridge, Tennessee

A hidden complex that enriched uranium.




Last updated: April 14, 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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