Records in drawings the author's journey through northern Europe and his impressions of the land, the people at work and play, and their art, architecture, folklore, and fairy tales.
The reader is asked to perform a series of mathematical operations integrated into the story of a lazy man who plants magic seeds and reaps an increasingly abundant harvest.
One by one, ten children move from their old house into their new house with all their possessions. Die-cut windows reveal the interiors of the houses and the book can also be read from back to front.
Optical illusions form structures in which curious little men can go up stairs to get to a lower place, hang pictures on the ceiling, and walk on walls.