I've been to...
Joe Louis Arena - Detroit, MI - Great place. Not a bad seat in the house. However, parking sucks and it's kinda outdated. They need a new place ASAP. (And I've heard rumors of it too)
Palace of Auburn Hills - Auburn Hills, MI - Nice place, but once again feels kinda old. I think the Wings and Pistons might build a big arena near Comerica in downtown D. That'd be sweet.
Comerica Park - Detroit, MI - Awesome as hell to watch a ball game. And nice on the days there's a Lions game too, or Wings playoff game. I've been there a ton. And even have Verlander's autograph
Spartan Stadium - East Lansing, MI - I'm a career 5-2 there when I see my Spartans play.
Saw the ND "Little Giants" fake FG game in person. An incredible experience.
Michigan Stadium - Ann Arbor, MI - This place is a dump. I know it's all tradition, blah blah, but it is AWFUL. The reason they cram 120K in there is because there is literally maybe a foot of space between the seat numbers. It's awful. I went there to watch them play MSU (34-17 MSU curbstomping) and I pinched a nerve keeping my legs to my side due to an obese person sitting in front of me.
Wrigley Field - Chicago, IL - Great place and a great area, but is super old and scares me. When we went I saw the concrete cracked all over the place. Why not patch it up? I'm sure a new Wrigley Field could work in the area.
U.S. Cellular Field - Chicago, IL - Awful part of town. You literally cross the tracks and you're in the ghetto of Chicago. Decent stadium though, nothing super special about it.
United Center - Chicago, IL - Saw MJ play there in his prime, I believe the final 3-peat year in 1998. Nice place, but I hate the Blackhawks so yeah