San Francisco is the centerpiece of the Bay_Area, it is a city well-known for its diverse ethnic and political communities, hilly terrain, and scenic beauty.
The city is located on the tip of the San Francisco Peninsula, with the Pacific Ocean to the west, the San Francisco Bay to the east, and the Golden Gate to the north.
There are three airports in the San Francisco Bay Area:
Wikipedia article
SFO is the second busiest airport in the state of California after Los_Angeles? International Airport. As of 2005, San Francisco International Airport is the fourteenth largest in the United States and the twenty-third largest airport in the world, in terms of passengers.