If you like tubing you can go down to New Braunfels (45 min south of Austin) and go down the Guadalupe river.

Funny, I did that when I lived in Houston, but living 15 minutes from there I never did it in the 3 years I lived in San Antonio . . .
_________________________
-Jeff
Rome did not create a great empire by having meetings; they did it by killing all those who opposed them.