Sutro Project / Fort Funston
The unofficial recreation wing of the Golden Gate National Recreation Area (run by the National Park Service), Fort Funston provides a world renowned hang gliding hot spot, the city's largest and best off-leash area for dogs and a network of beautiful trails and beaches.
Close and similar to Ocean Beach, the fort is across the street from Lake Merced and not far from the Zoo.
Website: http://www.parksconservancy.org/visit/park.asp?park=42
Wikipedia: http://en.wikipedia.org/wiki/Fort_Funston
