Indeholder "1. Tingen", "2. Den forvredne dåse", "3. Rumlige angivelser", "4. Inversion", "5. Kuboider", "6. Trapper", "7. Flader, der samtidig er langt væk og nær ved", "8. Dobbelt position", "9. Forsvindende rum", "10. Umærkeligt umulige figurer", "Litteratur".

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Her er eksempler på trapper der vender underligt og andre mærkværdigheder kendt fra M. C. Eschers kunst. Forfatteren har da også skrevet en bog om netop M. C. Eschers kunst. ( )

Fine book, well illustrated. Discusses different kinds of impossible figures, what visual cues conflict to induce the impossibility, how to recognize a truly impossible figure, etc. Uses M. C. Escher's painting as examples of the occurrence of particular well-categorized kinds of impossible figures. Offers plans for models that, viewed from certain angles, appear to be impossible figures. Rather short, at just under 100 pages, but that is part of its appeal.

A version put out by another publisher, Taschen, is a bit better than the one published by Tarquin. It is in a larger format, and contains many color illustrations and photographs which are shown only in black and white in the Tarquin version. The color photographs of models of impossible figures are somehow much more convincing than the black and white versions. ( )