Y: It's the second to last letter of the alphabet but of premiere importance in the history of Chicago. Embark on this adventure to find hidden Y shapes and learn why it's still an important symbol for Chicago. @Chicitigirl is a cartophile and Certified Professional Tour Guide of walking, food, kayak and virtual tours in Chicago. Follow @Chicitigirl on Instagram and Facebook to see Chicago from a local's perspective and learn about in-person and virtual tours.