If you see the picture at the side, San Francisco has two main bridges which make possible to connect this city with suburb of San Francisco. These are called Golden Gate Bridge and Bay Area Bridge. If you have chance to come this city, it is easy to go suburb of the San Francisco through these bridges.
I want to introduce you the downtown of San Francisco first. It is the place which you must go if you come to the San Francisco. It is literary the main street of the city. Because many department stores such as Macy's and stores of premium brands like Gucci and PRADA are located in here. So many tourists come here and buy their souvenirs. It also has big square called 'Union Square'. Some people have time to rest and eat in here. Sometimes it has some kind of performances and an ice rink at winter.
Union Square
Map of San Francisco