The tour on Wednesday gave me a better chance to understand the streets and the changes between the blocks compared to the map of 1924. Using the two maps for comparison helped me to see what and where is the actual change is. There was some major change to the streets and it was surprising to see how some of street are completely wiped out of the map and some street is now used for another purpose. Professor Montgomery gave the class a very informative tour and leaded the class to all the streets and alley. Some street used to be the front of the street on the 1924 map and now became the service side of the building which is considered to be the back. Some street is now restricted for security and government purposes, enter only with a permit. It was a great observation to see where exactly the changes to the streets and alley are.