Not so much a book as a miniature portable exhibition. The Architecture Pack encompasses nearly all the elements of an interactive book that could be squeezed in; pop-ups, red/blue glasses (used to give x-ray diagrams of constructions), cassette tape, model and glossary. Text and images are deliberately placed upside down on the page to force the reader to rotate the book to examine the backs of the pop-ups.
This is my favourite book and comes closest to fulfilling my design philosophy for interactive books.