Golden Gate Park is an urban park between the Richmond and Sunset districts on the West Side of San Francisco, California, United States. It is the largest urban park in the city, containing 1,017 acres (412 ha), and the third-most visited urban park in the United States, with an estimated 24 million visitors annually.
The creation of a large park in San Francisco was first proposed in the 1860s. In 1865, landscape architect Frederick Law Olmsted proposed a park designed with species native to San Francisco. The plan was rejected for a Central Park-style park designed by engineer William Hammond Hall. The park was built atop shore and sand dunes in an unincorporated area known as the Outside Lands.