Golden Gate Bridge
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 1.7 mile long bridge, easily identified by its International Orange color, connects San Francisco and the Marin headlands. Pedestrians and bicyclists can travel the sidewalks of the bridge during daylight hours, or enjoy vista points on both north and south sides of the bridge.