Highway 66 starts at 78-98 East Adams Avenue, Chicago, near the South Michigan Road intersection. There are two signs. One side of the road is pasted with something that looks ugly, while the other side is clearly written and mapped because it is in the grass fence inside the sidewalk. Highway 66 is a East-West ramp across the United States, starting in Chicago, Illinois, and ending in Santa Monica, California. It is more than 3,000 kilometers long. This highway witnesses the history of the Great Western Development in the United States and is called the Mother's Road by Americans. However, due to the completion of the modern expressway network, Highway 66 has gradually lost its position as the main transportation artery, some sections have become fragmented, and the sections left behind are more as historical relics for people to remember.