The castle was built to keep the people inside safe.  It keeps other people safely outside! Are you friend or foe?

With his unique blend of informative text and illustrations, master explainer David Macaulay takes readers on a tour of a medieval castle.  From the moat and the portcullis to the great hall and the dungeon, he shows how people lived inside—and how castle defenses worked to protect them from their enemies.

From the dust jacket