Here’s my take on historic Wrigley Field…and a miniature Christmas ornament.
The key I have found in modeling a lot of these old stadiums with the upper decks that extend over the lower decks, or in the case of old Tiger Stadium, over the field there needs to be a spacer layer. Otherwise you just end up with stair step layers and not the true architecture.
As far as legalities go, I treat these as architectural models and the only logos and word marks I use are ones on the field (football) or ones that are part of the actual building. Some athletics departments seem more aggressive than others, Georgia and Mizzou specifically. Those are the guidelines I use.
I believe that technically the design of the building is copyrighted, much like the Space Needle in Seattle. So any representation of the architecture would be an infringement. Like anything, you can roll the dice and see if they come after you.