Learn and ExploreLos Alamos was perhaps the most “secret” of the secret communities associated with the Manhattan Project. No one ever mentioned Los Alamos by name. It was simply known as "Site Y" or "The Hill." The entire town only had one mailing address—PO Box 1663 in Sante Fe. Everyone, including children, had to wear a government-issued identification badge.
Yet, Los Alamos had schools, a hospital, a general store, and all the amenities and services of a not-so-secret community. The people there interacted with local communities including the San Ildefonso Pueblo. So, what was it like to live life under the cloak of secrecy? Visit the sites below to find out.
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Last updated: December 7, 2021