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金门桥卫星地图 (世界奇迹指南)

http://en.wikipedia.org/wiki/Golden_Gate_Bridge The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the opening into the San Francisco Bay from the Pacific Ocean. It connects the city of San Francisco on the northern tip of the San Francisco Peninsula and a portion of the south-facing Marin County headlands near the small bayside town of Sausalito, and is located at 37°49′ N 122°29′ W (http://kvaleberg.com/extensions/mapsources/index.php?params=37_49_N_122_29_W_300000). The bridge is 1.22 miles (1970 m) long, the distance between the towers ("main span") is 4200 ft (1280 m), and their height is 746 feet (230 m) above the water. The bridge was the brainchild of Joseph Strauss, an engineer responsible for over 400 drawbridges, though they were far smaller than this project and mostly inland. Strauss spent over a decade drumming up support in Northern California. Strauss's initial proposal for this location was not at all pretty[1] (http://www.lib.berkeley.edu/news_events/exhibits/bridge/up028.html), being comprised of a massive cantilever on each side connected with a central suspension segment. Other key figures in the bridge's construction include architect Irving Morrow, responsible for the Art Deco touches and the choice of color, and engineer Charles Alton Ellis and bridge designer Leon Moisseiff, who collaborated on the complicated mathematics.