Sevier County has to be in top 10 somewhere. The back drop on a late fall Friday night with the mountains is something to behold. The stadium, when packed, can seat 6000. The turf with the big SC in middle and purple on the turf is beautiful. And now that they have added the Jumbotron, the atmosphere is great.
DB and OR are two of the best also. Plus have to add the Castle in Bristol.
Under the radar is Clinton, Greenville, and GP (stadium not so much, but the back drop OH MY)