Most of those "multipurpose" stadiums built in the 60's and 70's have thankfully been retired. I've been to the Metrodome. Yuck. By far the worst park I've seen in person, especially when it's less than half full. Other parks I've been to are Fulton County, Kaufmann, Busch (both old and new), Wrigley, Miller Park, Great American Ballpark and Citizens Bank Park. I found all of the newer parks to be very nice...my favorite experience might have been at Great American, as I sat in the upper deck behind home plate with a great view of the Ohio River.