We've been to Houston before and there wasn't anything we really wanted to do here (How many times can you see NASA?) but on our way here Janie discovered that there is a free cruise of the port and we decided to take it. What a nice find, unfortunately they don't allow cameras so there are no pictures.
The cruise took us through the port and there was very good narrative. The port of Houston is the #1 port in the US for domestic imports/exports and services 8,000 ships per year (almost 23 per day, 7 days a week) and it's #10 in the world. Not bad for a city that's 55 miles from the Gulf.
What we saw was a lot of oil refineries, scrap yards, gypsum plants and grain storage. We feel that we must not have seen everything because we didn't see any warehouse able goods. There was no explanation for that but there has to be one. It was a great cruise, for the price.