When I lived in San Fransisco, the first place I wanted to go was the Golden Gate bridge. The structure is absolutely huge up close. It is synonymous with the city and provides a link from San Francisco, California to Marin County. It is a suspension bridge that was revolutionary for its ability to sustain earthquakes, which bridges like the Bay Bridge could not. Until 1964, the Golden Gate Bridge had the longest suspension bridge main span in the world, at 4,200 feet (1,300 m). It now has the second-longest main span in the United States.