The UCR/California Museum of Photography (CMP) is an off-campus institution and department of the UCR College of Humanities, Arts, and Social Sciences. The CMP is located in the UCR ARTSblock, in Downtown Riverside. The collections of UCR/CMP form the largest, most comprehensive holding of any photographic collection in the Western half of the United States. The growing UCR/CMP collections encompass every aspect of photographic arts, history, and technology. It is located at 3824 Main Street, Riverside, California.