#1 Golden Gate Bridge (San Francisco)
Its two orange-red pylons define San Francisco and the wider American West. Completed in 1933, the Golden Gate Bridge stood for nearly three decades as the longest suspension bridge in the world at 2,720 metres, built to withstand fierce winds, salt corrosion, and seismic activity. You can cross it by car, bike, or foot, and 40 million vehicles use it every year. For the best views, head to Hawk Hill, Baker Beach, or Battery Spencer, and watch it light up after dark.