Awesome museum! Unfortunately when we went both th...

Awesome museum! Unfortunately when we went both the Chemistry and Ancient Egypt exhibits were closed for repairs. Still, it took us over 4 hours to see the rest of the main exhibits (if you actually want to read all of the information). You could easily spend over an hour in the Dinosaur/Fossil exhibit alone. There are lots of cool things to see, and a few cool selfie shot opportunities if that's something of importance to you.

We did not do the Butterfly Garden or see any of the movies, but if you add those on this could easily be an all day experience for those who want to enjoy what the museum has to offer. Sitting opportunities are pretty minimal in the exhibits, so definitely wear comfortable shoes if you plan to do more than a speed run of the museum. It can get pretty loud in the Energy exhibit since it's more interactive and geared towards kids. Depending on your preferences that could either be a benefit or something worth avoiding all together.

If we lived in the greater Houston area we would definitely come back for the rotating exhibits, I think they did such an excellent job with the Pompeii feature. Unfortunately we don't live nearby, but I would encourage both locals and tourists who enjoy museums to come experience this one at least once.