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Workers at the top of the tower, which will support the $35,000,000 suspension bridge, are shown during construction of one of the catwalks for the Golden Gate Bridge in San Francisco, Ca., Oct. 17, 1935. Below in background is the Marin County shore, which will be connected to San Francisco by the bridge. (AP Photo)

Golden Gate Bridge's 75th anniversary

San Francisco has held a yearlong 75th anniversary celebration of the opening of the iconic Golden Gate Bridge with a string of parties, guided tours and festivals. The bridge opened to the public on May 27, 1937.