After a short introduction movie, the doors open to the great hall. Set tables are on either side and behind the teachers' tables are the glasses for the house points.
There's an open to the sky set with Number 4 Privet Drive, Knight Bus and a cover bridge (which is were we enjoyed a cone with Butterbeer Icecream)
The last three rooms are for Diagonal Alley, the special effect / creature shop, and finally a huge model of Hogwarts.
Sadly (or maybe luckily) we ran out of time, and I hadn't much chance to look at everything in the souvenir shop.
The visit and the tickets are not exactly cheap, but I enjoyed it still a lot, and could have done another hour at least (we had about three).