Tourism recommendations

I am pretty new to Houston and have family coming down for Christmas. We don’t have a car but can rent one for a few days.

I need recommendations for places that we can visit in addition to these:

1. Johnson Space Center
2. Museum of Natural History, Cockrell Butterfly Center
3. Moody Gardens
4. Houston Zoo, Houston Aquarium

I tried searching online but couldn’t find good leads that were not museums. Excited to see how beautiful Houston is!