Golden Gate National Recreation Area
The Golden Gate National Recreation Area (GGNRA) is a National Recreation Area in the United States that protects ecologically and historically significant landscapes in the San Francisco Bay Area. The park contains a large portion of land that was previously used by the United States Army. GGNRA is managed by the National Park Service and is the most visited unit of the National Park system in the United States, receiving over 15 million visitors per year.
The park is not a single continuous location, but rather a collection of areas spanning from southern San Mateo County to northern Marin County, as well as several San Francisco neighborhoods. The park is as diverse as it is large, and it contains well-known tourist attractions such as Muir Woods National Monument, Alcatraz, and the San Francisco Presidio. The GGNRA also contains over 3,000 plant and animal species, 59 miles (95 km) of bay and ocean shoreline, and military fortifications dating from the Spanish conquistadors to Cold War-era Nike missile sites.