Golden Gate Bridge
The world-famous bridge connects San Francisco to the southern tip of Marin County.
A triumph of engineering, the bridge is 90ft wide and 1.2 miles long, spanning 220ft above the sea. The twin towers are 500ft above the road surface and 80,000 miles of cable was used in constructing the suspension cables. It was constructed between January 1933 and April 1937. A great way to view the bridge is from the water on a Golden Gate Bay Cruise.
Fisherman's Wharf
Once just home to the fishing industry, the area has been developed into an area of shops & restaurants, although fishing is still represented. The Cannery at the western end of the wharf was once the largest peach cannery in the world, owned by Del Monte. It is now home to many shops and restaurants.
Boat tours leave from the Eastern end of the wharf to the island prison of Alcatraz. However these get booked up well in advance especially during summer, so it pays to book ahead of your visit. It was a maximum security prison from 1934 to 1963. Now it is part of the Golden Gate National Recreation area and popular with the tourists. Alcatraz is very popular so it's a good idea 
Two blocks from Fisherman's Wharf is the closest you can get to Alcatraz without getting on a boat. Aside from its shops and restaurants there is a noisy sea lion colony in winter months on floating docks nearby. 
Of all things associated with San Francisco, the cable-car system is one of the best-known in the world. The F-line connects Fisherman's Wharf with Upper Market, carrying around 20,000 people per day. Adult fares are a flat $3 each way. You can take a 3 hour 
