The Baatara gorge waterfall (also known as the “Cave of the Three Bridges”) in Tannourine, Lebanon. The waterfall drops 255 metres ft) into the Baatara Pothole, a cave of Jurassic limestone located on the Lebanon Mountain Trail.
Royal Gorge Bridge in Canon City, Colorado. It's a real trip walking across that bridge with it's wooden slats - you can see the Arkansas River way below you! (There is a sign on the bridge that says, "No Fishing From Bridge" . I kid you not!
glass bridge 430 mtr long constructed across a deep canyon in China's Zhangjiajie National Forest Park designed by architect Haim Dotan, and believed to be the world's longest and tallest glass pedestrian bridge.