2. Golden Gate Bridge, San Francisco, USA
No list of bridges is complete without this orange-vermillion wonder that spans the strait linking San Francisco Bay with the Pacific Ocean.
It has stood above the Golden Gate, often shrouded in fog, for 75 years. At 4,200 feet long, the Golden Gate Bridge was, for almost 30 years, the longest in the world. In a city of superb see-before-you-die attractions, the bridge tops the list. Visitors can walk or bike across it.
Alternatively, the Bridge Pavilion tells the story of the bridge and has a range of souvenirs for friends and family back home.