Golden Gate Bridge

dapdFile - In an Oct. 25, 1935 file photo, workers complete the catwalks for the Golden Gate Bridge, prior to spinning the bridge cables during construction in San Francisco. The bridge was heralded as an engineering marvel when it opened in 1937. It was

dapdFile - In this May 27, 1937 file photo, military biplanes fly between the towers of the Golden Gate Bridge as pedestrians walk across the span during opening ceremonies in San Francisco. The bridge was heralded as an engineering marvel when it opened

dapdFILE - In this Dec. 14, 2011 file photo, University of Richmond students Ana Galan, bottom left, and Jorge Mallen, both from Spain, take pictures as fog rolls past the Golden Gate Bridge in San Francisco. on Monday, Jan. 9, 2012, the City launched a

USA CALIFRONIA WEATHER

REUTERSThe South Tower of the Golden Gate Bridge is seen in San Francisco, California May 25, 2012. The iconic landmark will observe its 75th anniversary with celebrations scheduled on Sunday. REUTERS/Robert Galbraith (UNITED STATES - Tags: SOCIETY)

dapdThe Phoenix fireboat sprays plumes of water as part of the Golden Gate Bridges 75th anniversary celebration on Sunday, May 27, 2012, in San Francisco. The commemoration included a vintage boat parade and a fireworks display slated for the evening. (Fo

dapdFile - In this May 24, 1987 file photo, a crowd estimated at several hundred thousand jams the deck of the Golden Gate Bridge in San Francisco during a walk to celebrate the 50th anniversary of the bridge. The bridge was heralded as an engineering mar

REUTERSThe Golden Gate Bridge is seen surrounded in fog in San Francisco, California May 8, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: ENVIRONMENT CITYSPACE SOCIETY)