The Golden Gate Bridge is a 2.7 km long suspension bridge in steel spanning the Golden Gate strait, 1.6 km wide and 4.8 km long channel, between San Francisco Bay and the Pacific Ocean. The bridge is one of the most internationally recognised symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers. It was thrown open to public in 1937 and was, until 1964, the longest suspension bridge in the world, At present, Akashi Kaikyō Bridge, Japan is the longest steel bridge.
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