Ah, Bar Louie was involved in one of my first memorable experiences after moving to Chicago back in 2006.
I was in the loop, outside, having a cigarette in between classes when someone walked up to me and asked me where Bar Louie was. I told her I don't even know what that is. She was shocked and appalled, dramatically responding with a "You don't know what Bar Louie is? Oh boy, you're missing out!"
The tone of her response told me that, no, I wasn't actually missing out on anything.
I've still never been inside a Bar Louie, and I couldn't give you directions to a single location, even if I wanted to. Hopefully soon, nobody else will be able to as well.