This pop-up or paper engineered book is beautifully done and very completely done as well. It begins when the reader open the book and a castle pops out to greet her/him. All parts of a castle are covered including the dudgeon and the garderobe (the toilet) even an Oubliette is discussed. Oubliette comes from a French word "to forget", and basically, a prisoner was placed in an Oubliette and forgotten -forgotten to be fed, to be let out, to receive any kind of care at all. These were truly horrific places. I saw one in England, and I just could not believe how small it was. I could not figure out how an adult would fit in this hole even if people were smaller during The Middle Ages. The people who lived in a castle are mentioned, and a description of what these people would do is included. Towards the end Knights are brought into the story. "The Knight's Stuff" mentions the siege machines used in warfare such as a catapault. The book also talks about the Sappers. The Sappers did the tunneling underneath a castle very often being successful in collapsing a part of the castle so soldiers could get inside. It is told how being a Knight was expensive, and eventually, the king would change Knights for professional soldiers or mercenaries. Finally, Knights seemed to "disappear along with chivalry. " This book covers a great deal of what took place during The Middle Ages. In addition to the art work included in the book, this pop-up book on the Castle is superbly done, and it is a great way and a fun way to learn about the Castle and the role it played in The Middle Ages.