When you go to Xojo Developer Conference early October, be sure to add a few extra days to visit the area.
Beside the malls, zoo, aquarium and museums, there are a few things you may want to check out.
There is battleship Texas available for visit:
and of course NASA has the Houston space center:
If you drive to Austin, you can visit the capital of Texas:
and if you drive to San Antonio, be sure to visit the trail and all those missions. We drove from the Mission de la Espada and to stopped at all the other missions on our way to downtown with the last one known as the Alamo.