The pop-ups, designed by Bruce Foster, are complex and well-designed, with a nice interactive aspect: numbers on the pop-up can be matched to a list on the spread (ie: Find Dumbledor's Office.) There are fascinating insights throughout the book regarding aspects of the filming of the Harry Potter movies, sort of a behind-the-scenes tour. And, the art cannot be more authentic - it is by Andrew Williamson who was Concept Artist for the whole series of films.
I spent over an hour with grandchildren, ages five and ten, pouring over the book, spread by spread, taking turns reading the narratives, and matching features of the pop-ups to the numbered lists on several spreads. We were all especially delighted with the pop-up of Hogwarts School of Witchccraft and Wizardry, especially when we read that "J.K. Rowling described her vision of Hogwarts as 'a huge, rambling, quite scary-looking castle with a jumble of towers and battlements.'" That's exactly the way it looks," said the ten-year-old. In our case, the book was a pleasure for ages five to eighty-three.