Once called “the bridge that couldn’t be built,” today it is one the seven wonders of the modern world. This magnificent span, perhaps San Francisco’s most famous landmark, opened in 1937 after a four-year struggle against relentless winds, fog, rock and treacherous tides. The Golden Gate Bridge has lost 7,500 tons (in weight) since it opened in 1937. Three babies have been born on the Golden Gate Bridge. All of them have been boys.