This is the first Katie book that we read. Both my daughter(5) and son(3) loved reading this together. The illustrations are wonderful and the mischievious Katie and her adventures kept their attention. When we visited the National Gallery, they recognized similar impressionist paintings and were happy to find one of the Renoir's shown in the book. We've since purchased more of the Katie books and they've given us a basis for hunting for particular paintings or landmarks. The books are a terrific combination of imagination, fun and education.