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Bought as a Christmas present last year, Grandson number three absolutely loved it, and kept him amused for ages. The book is the usual excellent quality that you'd expect from Dorling Kindersley, which slots nicely into a presentation box with the Lego pieces. There's two different small models to build with the Lego included, a Magical Fireplace and a Sorting Hat Spinner, with only enough pieces to build one at a time, so it encourages children to strip down a model and rebuild it into something else. There's also plenty of ideas in the book, with pictures included, to inspire children to build their own Harry Potter models (but be aware that the additional Lego pieces will have to be purchased separately).