The Treehouse Restaurant
The Treehouse restaurant was a fairly highbrow eatery, its name came from the fact that the main dining room was built on stilts, in the treetops. You parked below.
You can still see the remains across from the Doughetry Arts Center on Barton Springs near South Lamar. It was open in the 70s, closed, then reopened briefly some years later. Its been shuttered for a very long time now.