As Far As You Know

I booked airfare last night for a two-day trip to Chicago during the school's Long Weekend break in October. I drove through the city once--in the midst of a tornado warning--and certainly have logged my share of hours between flight segments in O'Hare Airport, but somehow I have never spent any time in Chicago proper. It's an easy and cheap round-trip from Bradley Airport, with non-stop flights, so why not?