As you can see above, the square is just like any other city square. One part of it just happens to have stained bricks surrounding a long, narrow drain. I haven't seen that and I don't particularly want to. We weren't actually allowed to walk very far in the square. A police offer ushered us back to where we came from. That's really unusual, as it's a public place and viewing it (and the goings-on there) is encouraged. I have no idea why we weren't allowed into over half of it.
The National Museum was a trip! It's a (rather good) natural history museum with the ever-so-slight Islamic undertone. I expected a much more heavy handed approach (a la the Creation Museum), but you have to remember that Islam actually really digs science. The two aren't at odds with one another, like we see with Christianity in the West.
The room with the prophet' story also had a recording of the reading/recitation of the of the first chapter of the Quran. Quranic Arabic is tonal and sounds an awful lot like singing to a Western ear. If you haven't heard the recitation, you should (click here for the scene from the film Wadjda), as it's quite beautiful. I can't find the one with English subtitles, but here is the English translation of the particular chapter that her principal has asked her to recite (she's a rebellious girl, so it seems this chapter was chosen purposefully). If you haven't seen Wadjda, I recommend it. It was the first Saudi film nominated for an Oscar. The female director had to direct the film from inside a van.