I haven't even visited all the schools I applied to -- but I'm sure a lot of you have. Let's pool our knowledge and share our thoughts!
The one I've visited so far is UChicago.
Overall, I was not too inspired. Everyone there seemed to be a white, Midwestern woman. I sat in a small stats-based class which was very interesting -- surprisingly, I completely understood what the professor was talking about -- but all the students seemed a bit bored or sleepy (I think the class was at 11 or noon?) and none of the students struck me as particularly impressive. Of course, it's probably difficult to show off genius in a stats class... but it seems that most UChicago classes are stats classes.
While the undergraduate campus is beautiful, the Harris School is not. It looks a bit like an office. And it was very dark inside. All in all I felt a bit gloomy. The students I talked to were not overly enthusiastic. They didn't sell the school to me. One of them actually talked about his friends at Georgetown for quite a while. I was, however, impressed by the presentation by career services, the mentorship program and the hands-on opportunities that the students get. Which sort of boils down my impression of the Harris School -- extremely practical.
And even though it sounds like I'm hating on the place, I still really want to go and hope I get in! I would visit again if I'm accepted though...
Share your thoughts! Did you have a completely different impression? What's your take on other schools?