Houston in Two Days
If possible, take the light rail over to the Museum District. There are too many museums to choose from, but don't miss the superb Museum of Fine Arts, Houston, the Menil Collection and the Houston Museum of Natural Science, where you should head straight to the stunning Paleontology Hall. In between, take a break in attraction-filled Hermann Park.
Choose a classic meal from one of Houston's iconic burger, Tex-Mex or barbecue joints.
On day two, look for streets with local shops in River Oaks, Montrose and the Heights.
Explore Houston's surprising historic and natural world in and around Buffalo Bayou Park. When it's time for an afternoon refreshment, choose one of the open-air patios in Montrose or leafy Rice Village, and watch day turn into night.
Houston in Four Days
Use your third day to see the parts of Houston you missed in the first two days. There are a lot more museums and fun attractions, such as Orange Show Center for Visionary Art. At night, enjoy live music from the patio of one of Houston's great bar venues.
On day four, drive to Clear Lake and Space Center Houston to learn everything you ever wanted to know about NASA and space travel. Have lunch or dinner at the best place for barbecue in this part of Texas: Killen's Barbecue.