I just got back from my first visit to Houston, and to Texas for that matter. Houston is such an alive and thriving city capturing so many cultures, ages, and food adventures (I highly recommend Poscal for a deliciously authentic Italian meal - chicken liver pate bruschette, oh yes).
There is SO MUCH (free) ART in Houston. Our stops included the Rothko Chapel, the Menil Collection, Houston Center for Photography, Post-Studio, the Byzantine Fresco Chapel, and my personal favorite, the James Turrell installation at Rice University.
I definitely recommend adding Houston to your travel list.
Signing out from the Bayou City.