On this day in 1837, the City of Chicago was incorporated. A lot has happened in the past 174 years--some of it good, some of it bad.
Before we have a piece of cake in its honor tonight, we decided to round up a few things Chicago has perfected in its 174 years as an American city.
Also worth checking out is Chicagoist's list of things they would give the Windy City for its birthday if money were no object.
Here are the 6 things we think Chicago has mastered over the years. Feel free to disagree in the comments section, or add your own slide.