During the Manhattan Project, a number of sites were developed around the U.S. in order to assist in the production of high-grade plutonium in order to create nuclear weapons. One of the best-known sites was the Hanford Site, located in the stark landscape of eastern Washington state. At the conclusion of the Cold War, many of these nuclear weapons production facilities were mothballed, yet there was a growing interest in preserving some of these facilities as historic sites. This website documents the creation of this fascinating historic site, along with offering ample written materials on the site's history along with some visual materials, such as plans and photographs. Visitors can read the programmatic statement between the Department of Energy and the Washington State Historic Preservation Office, the curation strategy for the site, and the historic site treatment plan, which was prepared in 1998. Also, visitors can peruse a number of documents on the history of plutonium production on the site, a history of the plant facilities, and an 80-page book that documents the history of the Hanford Site in great detail.