Depends on what you guys like to do. There are plenty of interesting parks in Texas. You could easily spend a week in the Big Bend area if not more. Then there is Palo Duro SP, Copper Breaks and Caprock parks in the Amarillo area. And San Antonio has the Riverwalk, Alamo and a number of interesting parks around it.
Anyway I think people tend to find completely different geography from their home to be interesting. Coming from soggy Louisiana you should find desert Texas to be fascinating.
But on the other hand, you may recall Phil Sheridan's quip: "If I owned Hell and Texas, I'd rent out Texas and live in Hell."
BK