4. Chengyang Wind and Rain Bridge in Sanjiang County, China
The Wind and Rain is an amazing bridge which passes over Linxi River, Sanjiang County. It is one of the oldest bridges, built in 1916. The amazing thing about this bridge is that it was built without nails or rivets. Thousands of pieces of wood were dovetailed which replaced the nails and rivets.
Image Credit: absolutechinatours