Drove by July 1 2020 and it looks like the Mystery Machine and Lightning McQueen had been freshly painted and looked great! The store here sells jerky and is worth a stop if that's your thing.
One of the scenes (the one immediately viewable from the parking area) is vandalized but still enjoyable. Make sure to take the short walk to the other scene! The entities depicted kind of look like aliens.
The dirt road to these is just after the railroad track on Airport Rd. However, the road looked to be in pretty bad condition when we visited so we did not head up it and just saw the art from afar.
Easy to find and quick stop. If you're in the area, why not?
Modest selection of pottery and some paintings/jewelry in the gallery for purchase. Enjoyed the visit.
Very scenic and enjoyable walk through the boardwalk, though we walked through many spiders' threads that had been spun since the last visitors! We happened to get there first thing in the morning and the owls and other birds had mice and other beasts in their cages to feed on which was neat to watch.
Rusty (great guy, truly loves his cars!) recently opened a 2nd building so there's a good 20 or so cars to check out. Something for everyone here and I highly recommend visiting if you're there on a day it's open (they do take credit cards).
Google Maps was able to lead us directly to the Cave. Absolutely beautiful inside with the crystals and the scenes that were set up.
Greatly exceeded my expectations with its beauty and multiple angles/opportunities for photo ops. Definitely worth going to even if it doesn't happen to be directly on your route.
Stunning and beautiful grounds to walk through with water features and a memorial. Sunsphere is free to travel up for a great view. Parking is tricky - either park in the lot that extends from the Knoxville Art Museum or park downtown in one of the parking garages and walk over via the pedestrian bridge. I'd recommend parking downtown in the garage so you can visit the amazing Market Square and graffiti alley too.