Natural Bridges State Beach is a 65-acre (26 ha) California state park in Santa Cruz, California, in the United States. The park features a natural bridge across a section of the beach and a eucalyptus grove provides habitat for monarch butterflies. During monarch butterfly migration, Monarch Butterfly Natural Preserve has up to 150,000 monarch butterflies from October through early February.

Santa Cruz is the largest city and the county seat of Santa Cruz County, in Northern California. As of the 2020 census, the city population was 62,956. Situated on the northern edge of Monterey Bay, Santa Cruz is a popular tourist destination, owing to its beaches, surf culture, and historic landmarks.