4. Trift Bridge, Switzerland
Built in 2004 and remodeled in 2009, the Trift Bridge is the longest and highest suspension bridge of the Alps. 100 meters high and 170 meters in length, this turned out to be a tourist magnet. The route to the bridge in a cable-car itself is adventurous enough but the spectacular view of the Trift glacier below is pastoral. However, people with acrophobia (fear of heights) are highly recommended to stay away from this pedestrian delight.