Wanning Bridge, located in Di'anmenwai Street, Xicheng District, was built in the 22nd year of the Zhiyuan Period of the Yuan Dynasty (1285 AD). The stone bridge from the Yuan Dynasty strides over the estuary where Shichahai's water flows into the Yu River, and was the starting point of the Grand Canal in the Yuan Dynasty. A World Cultural Heritage sign for the Grand Canal stands next to the bridge.

On the stone revetments on both sides of the bridge, there is a beast-shaped sculpture on each of the four ends. Serving as the dividing points of the river, these stone beasts lie on the edges of the banks, as if they were looking at the bridge holes. The two sculptures on the east side of the bridge lie on the edge of the eastern bank, with their heads sticking out, posing as if they were looking at the water from the bank. Because they are on the lower side of the river, it looks as if they are looking at the water through the bridge holes. The two to the west of the bridge have their heads sticking out. Their claws with suction cups are grasping the vertical wall of the bank, with one side of the body of each hanging outside the bank, signifying that they have a good understanding of the water and will protect the river from floods.