Why is St Patrick’s so special here?

Hi all,

I’m a bit new here but just wanted to know why St Patrick’s is special here in Chicago. It seems like a huge event and everyone is prepping for it.

I don’t think I’ll have the chance to experience it myself this year as I’m new and don’t have anyone to go out with but please throw any recommendations on how to best get involved. Also I’m 26M if anyone is open to going out for st patty’s together.