The world's longest glass cantilever bridge in Yunyang county, Chongqing, will be opened to tourists on May 1. The "Cloud bridge" is built on top of the cliffs 1,123 meters above sea level. The bridge is about 3.4 meters wide and 50 meters long, with a shape of flower. When one stands on it, he will feel totally "suspended" in the air without any line in sight. (Photo/CNS)