Here are links to our past year's trips: Colorado Bend State Park in Texas, Crater of Diamonds State Park in Arkansas, and Carlsbad Caverns in New Mexico, and last year's huge trip parts 1, 2, 3, 4, 5, 6.
Houston City Pass to "save admission on the Top 5 Houston attractions". It really did save us some money.
Houston Museum of Natural Science. You can see in the first photo on this post that I have a lovely borrowed cargo carrier on top of my car. Unfortunately, I forgot about that carrier while I was trying to park in the museum's garage. The garage had a 6 ft 8 in clearance and I did not. OOPS! There was a terrible noise when I drove into the garage. The lady in the pay booth started yelling at me and pointing to my car's roof. I panicked a bit because it looked shorter inside the garage than the opening. I asked the pay attendant if I could back up. She said no. I then asked if my tires would be shredded if I backed up. She said there was not a back-up preventer she just didn't think I should back up. That is not how I saw it. I asked D to get out of the car and take a look. She said the carrier was still attached and a little caved in (it was halfway thru the opening). I slowly backed up with another horrible screech and managed to get out. The top of the carrier popped back up into place. It had a nasty scratch across the top, its function was not damaged, the lock was intact, and my car's roof was not harmed in any way. What a lucky break! Of course the boys had a great time teasing me about it for the rest of the trip. They read off EVERY clearance sign they saw.
We stayed at the museum almost until closing. It was definitely not enough time to explore everything. You would need several days to do that. I definitely want to go back. We found a place to eat dinner on our way to the (tall) parking garage to get our car. There was still time to swim after we checked into the hotel. The boys thought it was great to have the whole pool to themselves.