05. Golden Gate Bridge
This bridge is widely regarded as the most famous bridge in the world. It is probably the most photographed as well. It is a suspension bridge that spans the Golden Gate, the state between San Francisco and Marine County. When it was built in 1937, it was the longest suspension bridge in the world. Since then it has become the icon of San Francisco. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers. The red color of the bridge is to make it visible in extreme temperatures as well.