I have spent the last week in San Francisco. It's like all the best places you have ever visited all rolled into one. We used the City Pass which can be bought for around $60 and gets you free entry to numerous attractions as well as free transport on the Muni transport system which includes buses, streetcars (trams) and the cable car. We saw Alcatraz, Aquarium of the Bay, the De Young museum and San Francisco MOMA all on the pass. Other highlights include Coit Tower, the Streetcar Museum, the California Historical Society and the Exploratorium. The Oakland Bay Bridge and the Golden Gate are spectacular, as is the cityscape. There are many beautiful Victorian houses and the choice of food here is exceptional. It's a very inspirational city.