Travel about 90 minutes south of Austin and you'll reach the heart of downtown San Antonio. Take a riverboat tour or eat and drink on the patio of one of the dozens of bars and restaurants lining the famous attraction and if you still have time, don't forget to check out the Alamo.
Drive 30 miles west of Austin to Hamilton Pool to see an amazing swimming hole/cave/waterfall that was featured in the film Tree of Life. If the weather is too cold to swim, take some time to hike there instead (and stop for BBQ at Opie's on the way home).
Some people would say visiting Salt Lick BBQ in Driftwood is a religious experience -- meat, cole slaw and cobbler worth praying to. Bring a 12-pack of beer and make yourself comfortable, this is a meal you'll remember.
Lockhart, Texas estimates over 250,000 come to their town to eat BBQ. Blacks, Smitty's, Kreuz serve meat unlike anything you or the other 250,000 people have eaten. And while you're looking for BBQ, drive to Llano and Elgin for some more!
Just outside of town are the Texas Hill Country Wine Trails. You'll get a glimpse of some of Texas' most iconic scenery while tasting award winning wines at a number of beautiful vineyards and wineries.