Camarillo State Mental Hospital

Camarillo State Mental Hospital was a psychiatric hospital for both developmentally disabled and mentally ill patients in Camarillo, California. The hospital closed in 1997. The site has been redeveloped as the California State University, Channel Islands. The university has retained the distinctive Mission Revival Style architecture, and the bell tower in the South quad has been adopted as the symbol of the university.

When the United States took possession of California and other Mexican lands in 1848, it was bound by the Treaty of Guadalupe Hidalgo to honor the legitimate land claims of Mexican citizens residing in those captured territories. The land upon which the former Camarillo State Hospital sat, once belonged to Isabel Yorba as part of an 1836 land grant, known as "Rancho Guadalasca."

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