Fenway, KC, Dodger Stadium and the old Yankee Stadium. I'd go more, but the tedium and hassle of getting to and from the stadium more than matches any enjoyment I could get from watching (this is esp. true of Dodger Stadium--they may now have a bus from Union Station, and if so, Ill try again). I thus prefer minor league baseball: you pay nothing, you sit close, you drive in with no problem, you rarely have to deal with belligerent a-hole fans, and everyone hits like crazy.