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7 Wonders of the Modern World

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Golden Gate Bridge

Connecting San Francisco and Marin County in 1937, for many years the Golden Gate Bridge was the longest suspension bridge in world. Experts thought that winds, ocean currents, and fog would make it impossible to build. It took about four years to complete the beautiful 1.2-mile-long (1.9 km) bridge. It is held by 80,000 mi (128,747 km) worth of steel wire, and the cables that link the two towers are 36.5 (92.7 cm) inches in diameter—the biggest ever made.

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