I'd just like to say, that prior to the movies, everything in my mind had been different about Harry Potter. The way the castle looked and worked, their school uniforms, Diagon Alley and everything else related to that Harry Potter universe.
It's a little sad but the movies have destroyed some of the things my imagination has created and replaced it with the way things looked in the movies. I don't think all of them have been negative, for example seeing the Quidditch match in the first movie, has somewhat explained the game more. I guess it's harder to understand a sport without having to seen it or played it.
At the same time, I still prefer the way, I've imagined the castle to look. Perhaps I'll draw pictures of what I think it should look like. What abotu therest of you? Did you imagine the way things look before the movies, as they look in the movies or did you have something totally different?