Perhaps you were referring to the Biltmore Estate in Asheville, North Carolina?
That's it. It's official. I've been in the west way too flipping long. I need a roadtrip to the east coast. It's NC, not TN.
It is however not the Biltmore. It's called Seely Castle IIRC. I wasn't driving when I went around the perimeter road however I think it was NE of town somewhere.
Hey Oh Crap - could you make a Castle Ride Report this Summer so I can live a dream vicariously through you?
Only if castles are near UT.