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Tianmen Glass Skywalk, China
China is home to a number of breathtaking skywalks, but this is the highest and the most exhilarating of all. 4700 feet above the valleys of Tianmen mountain peak stretches this 200-meter long bridge made entirely of glass. This bridge is 3 feet wide and 2.5 inches thick. What makes it so exhilarating is the narrowness of the bridge, its height above the ground. And the fact that you can see the deep valley stretching endlessly right below your feet. Not to mention that the bridge swings to and fro all the time owing to the strong winds at this altitude.
