The California Academy of Sciences is among the largest museums of natural history in the world. The academy began in 1853 as a learned society and still carries out a large amount of original research, with exhibits  and education  becoming significant endeavours of the museum during the twentieth century.
Remodeled in 2008, the building now is among newest natural history museums in the United States. It is located in Golden Gate Park in San Francisco, California. The academy provides a map, floor plan, and detailed information about exhibits on its web site. The primary building in Golden Gate Park reopened on September 27, 2008.