California is a large, geographically diverse state with coastlines, deserts, forests, islands, valleys and mountains. It has the largest population of any US state. Major cities include Los Angeles, home to Hollywood; San Diego, known for its beaches and zoo; and San Francisco, famous for landmarks like the Golden Gate Bridge. California has a rich history, having been part of Spain for over 150 years and experiencing a major Gold Rush in the 1800s. The state remains an economic and cultural center of the US.