California Citrus State Historic Park is an open-air museum in the state park system of California, United States, interpreting the historic cultural landscape of the citrus industry. The park’s museum exhibits and interpretive features share the story of the citrus industry's role in the history and development of Southern California, and is told through the experiences of the diverse migrant and immigrant groups who made it all possible. The California Citrus State Historic Park is in the city of Riverside in Riverside County, California, United States. The 248-acre (100 ha) park was established in 1993.