Here's a fun article on the area:
http://www.roadsideamerica.com/story/2219
Personal disclosure: My great uncle had a string of one-off tourist attractions he built around Pigeon Forge and Gatlinburg (Gateway to the Smokies). He sold off most of em when Dolly Parton got her thing going in Pigeon Forge.
The best was a pee-wee golf course in Pigeon Forge (long gone) with a fiberglas mountain full of dioramas of things like the abominable snowman. He had a real hokey ride called the "Earth Auger"...a steel tube in the "mountain" painted with flames, and outfitted with a couple of hanging benches. He'd get your $$, sit you down, close the door, and the red walls would rotate around you while he read a script about " traveling down to the molten core of the earth". Sheesh. It was fun, though.
The one I remember best is Mystery Hill. I actually worked there a summer when I was about 8. My job as young and relatively innocent was to take a roll of bumper stickers out to the parking lot when folks were inside and slap "Where the Hell is Mystery Hill" stickers on everyone's car. I still remember part of the barker's schtick: "See gravity DEFIED, see water run UPHILL".
Here's a a vintage postcard from the place....HooBoy!

And there is ONE of his creations still going strong-
Anybody been to the Gatlinburg Space Needle? Shouldn't be missed!
http://www.gatlinburgspaceneedle.com/index.htm
and the real vintage deal:

This place, Christus Gardens, is a Christian theme model park..,and the eyes of many things follow you..so sad to hear it closed this year due to a copyright lawsuit!...isn't Christian imagery public domain??? First place I think I ever really understood the unique value of kitsch.

And the old Gatlinburg Convention center:

versus the new "improved" version:

Haven't been to this area for about 5 years, but were still lots of swell MCM motels left then....
Anybody else out there braved the crowds to check out some of our nation's finest tourist traps in TN?