The capitol building is quite attractive and rich with history.
I got lucky and got a personal tour because I was the only one who showed up for the 10 AM tour the day I was there. I highly recommend taking the tour (it's free). My guide was very knowledgeable about the building's history and the artwork.
The legislature was in session, so I got to sit in the Senate and House galleries to watch some legislation in action. It was also a great experience because the capitol was buzzing with activity.