1. Golden Gate Bridge
The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide strait connecting San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, California—the northern tip of the San Francisco Peninsula—to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait. The bridge is one of the most internationally recognized symbols of San Francisco and California. It was initially designed by engineer Joseph Strauss in 1917. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers. The Frommer's travel guide describes the Golden Gate Bridge as "possibly the most beautiful, certainly the most photographed, bridge in the world." At the time of its opening in 1937, it was both the longest and the tallest suspension bridge in the world, with a main span of 4,200 feet and a total height of 746 feet
2. Golden Gate Park
Golden Gate Park, located in San Francisco, California, United States, is a large urban park consisting of 1,017 acres of public grounds. It is administered by the San Francisco Recreation & Parks Department, which began in 1871 to oversee the development of Golden Gate Park. Configured as a rectangle, it is similar in shape to but 20 percent larger than Central Park in New York City, to which it is often compared. It is over three miles long east to west, and about half a mile north to south. With 24 million visitors annually, Golden Gate is the third most-visited city park in the United States after Central Park and the Lincoln Memorial.
3. Lombard Street
Lombard Street is an east–west street in San Francisco, California that is famous for a steep, one-block section with eight hairpin turns. Stretching from The Presidio east to The Embarcadero, most of the street's western segment is a major thoroughfare designated as part of U.S. Route 101. The famous one-block section, claimed to be "the crookedest street in the world", is located along the eastern segment in the Russian Hill neighbourhood. It is a major tourist attraction, receiving around two million visitors per year and up to 17,000 per day on busy summer weekends, as of 2015. San Francisco surveyor Jasper O'Farrell named the road after Lombard Street in Philadelphia.
Pier 39 is a shopping center and popular tourist attraction built on a pier in San Francisco, California. At Pier 39, there are shops, restaurants, a video arcade, street performances, the Aquarium of the Bay, virtual 3D rides, and views of California sea lions hauled out on docks on Pier 39's marina. A two-story carousel is one of the pier's more dominant features, although it is not directly visible from the street and sits towards the end of the pier. The family-oriented entertainment and presence of marine mammals make this a popular tourist location for families with kids. The pier is located at the edge of the Fisherman's Wharf district and is close to North Beach, Chinatown, and the Embarcadero. The area is easily accessible with the historic F Market streetcars. From the pier one can see Angel Island, Alcatraz Island, the Golden Gate Bridge, and the Bay Bridge. Blue & Gold Fleet's bay cruises leave from Pier 39.
Alcatraz Island is located in San Francisco Bay, 1.25 miles offshore from San Francisco, California, United States. The small island was developed with facilities for a lighthouse, a military fortification, a military prison, and a federal prison from 1934 until 21 March 1963. The water currents around the island were high at all times, which presumably decreased the chance of an inmate escaping. Beginning in November 1969, the island was occupied for more than 19 months by a group of Native Americans from San Francisco, who were part of a wave of Native American activists organizing public protests across the US through the 1970s. In 1972, Alcatraz became part of Golden Gate National Recreation Area and received designation as a National Historic Landmark in 1986. Today, the island's facilities are managed by the National Park Service as part of Golden Gate National Recreation Area; it is open to tours. Visitors can reach the island in a little under 15 minutes by ferry ride from Pier 33, located between the San Francisco Ferry Building and Fisherman's Wharf, San Francisco.