Historic Route 66 Begin Sign

Is this the beginning or the end? If you were traveling westward, it would have been the beginning. But, if you came from the west, it would have been the end of your journey on Route 66. However, it is mounted so that it is facing travelers coming from the east and driving westward so it's fair to say that this stop is the beginning. Don't forget to stop at the Art Institute of Chicago right across the street which houses priceless works such as American Gothic and Water Lilies.