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'''San Francisco''' is a city in [[California]] and is generally considered one of the most beautiful cities in the world. <ref>http://www.globosapiens.net/travel-information/San+Francisco-638.html</ref> It is well known for its excellent public transit systems, including MUNI subway and streetcars, BART trains to suburbs, and the famous San Francisco cable cars. <ref>http://www.reserve-hotel.com/HBOImages/destinations/usa/sanfran/transportation.asp</ref> The city has survived two extremely damaging earthquakes, one in 1906 and another one about 75 miles away in 1989.<ref>http://www.sfmuseum.org/1906/89.html</ref><ref>http://earthquake.usgs.gov/regional/nca/1906/18april/index.php</ref>  Fear of another earthquake is the reason that no freeway through the city exists. Indeed, it is impossible to access the Golden Gate Bridge without driving on city streets.

'''San Francisco''' is a city in [[California]] and is generally considered one of the most beautiful cities in the world. <ref>http://www.globosapiens.net/travel-information/San+Francisco-638.html</ref> It is well known for its excellent public transit systems, including MUNI subway and streetcars, BART trains to suburbs, and the famous San Francisco cable cars. <ref>http://www.reserve-hotel.com/HBOImages/destinations/usa/sanfran/transportation.asp</ref> The city has survived two extremely damaging earthquakes, one in 1906 and another one about 75 miles away in 1989.<ref>http://www.sfmuseum.org/1906/89.html</ref><ref>http://earthquake.usgs.gov/regional/nca/1906/18april/index.php</ref>  Fear of another earthquake is the reason that no freeway through the city exists. This stems from the 1906 earthquake that penetrated the mayor's mansion and, although not completely demolishing it, left the many urban areas flaming. Indeed, it is impossible to access the Golden Gate Bridge without driving on city streets.

The downtown area of the city is laid out on two grids, with a 45 degree offset between them.  Market Street separates the two grids.  Many tourists come to visit the Civic Center, Embarcadero, and Union Square areas, all of which are north of Market.  Famous San Francisco landmarks include the [[Golden Gate Bridge]], [[Fisherman's Wharf]], and [[Alcatraz Island]].

The downtown area of the city is laid out on two grids, with a 45 degree offset between them.  Market Street separates the two grids.  Many tourists come to visit the Civic Center, Embarcadero, and Union Square areas, all of which are north of Market.  Famous San Francisco landmarks include the [[Golden Gate Bridge]], [[Fisherman's Wharf]], and [[Alcatraz Island]].