Ok so this is the first 3D ballpark model that we featured in a game broadcast on Twitch.
It took about 2 days to complete, and though there are a few issues with signs not displaying as intended, I am basically very happy with it. This wiki page gives some glimpses of the overall look and some detail shots of features.
http://wiki.bullleague.org/Inferno_Park
I did two other parks before this one, a sandlot for one of our feeder teams was the main "learning" 3D model, and then a pretty plain jane ballpark for the team I manage as commish.
All parks, teams and players are fictional in our league.
Thanks to Silvam for the awesome videos that helped me finally wrap my head around how to create and import these beauties.