They were great sets, with all sorts of cool details. My son and I actually built the Great Hall set in the hotel room that night, despite knowing we'd have to pull it apart again for the flight back to Australia. Somewhere along the way I was left deciding that I wanted to expand on the sets a bit. I think the size of the main tower in the Great Hall set underwhelmed me a bit. I felt the rest of the detail warranted a bit of an upgrade. Anyway, when we got home I was still keen to do this, and made the mistake of hopping onto Bricklink for the first time. And things basically spiraled out of control from there...
This is my most recent complete picture of my Hogwarts build. Some elements have been added since then, but it's hard to get a complete picture of it all at once in its current room.