Last May 2010, I first set foot in Texas, in Houston, to visit two former officemates when I was still working in Philippine Congress in the 90s. It was the last leg of my US trip then (Chicago-Detroit-Houston), the last 2 cities were tours after my conference in Chicago. I have Filipino friends in those cities who would pick me up from the airport and bring me back there, host in their house and tour in their cities for free, why not grab the opportunity.
Houston is the home of NASA's space program then, I think until now. Thus, the airport terminal has exhibits and decorations of rocket ships, space shuttles, astronauts, and related stuff.