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Learn about the Manhattan Project with a ranger. Attend interpretive programs that help you explore the Manhattan Project and life in the Secret City. Programs include tennis court dances, historic walks, and kayak trips where visitors can paddle through history.
Scroll down for more information on ranger programs ▼ ![]() DOE/Westcott Enriching Uranium in Happy Valley: Guided Ranger Walk at K-25The largest plant site of the Manhattan Project, and the war, K-25 helped isolate the crucial uranium-235 from the more abundant uranium-238. To accomplish that goal, tens of thousands of construction workers relocated to Happy Valley. Learn more about their sacrifices and accomplishments on a ranger walk along the greenways through the former K-25 site.
![]() NPS Building America’s Secret City: Guided Ranger Walk in Jackson Square
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Last updated: April 25, 2025