There are \(715\) routes to walk from Union Station to Millennium Park.
Solution using the method from Hint 1:
Solution using the method from Hint 1:
Solution using the method from Hint 2:
There are \(9\) east blocks and \(4\) north blocks. The number of distinguishable ways to walk those blocks is found by: \(\large\frac{13!}{9!\cdot4!}=\normalsize715.\)