Introduction to Gaotun Tiansheng Bridge: The Gaotun Tiansheng Bridge in Liping County is 138 meters wide, with an arch height of 33 meters from the water. It is a combination of strangeness, danger and beauty. It is uncanny and majestic. It is the world's largest natural stone arch bridge and is listed as one of the world's largest natural stone arch bridges. The best in the world in Guinness. Tiansheng Bridge.