ABOUT THE SERIES: For more fun facts behind the fiction, don’t miss these Magic Tree House Research Guides! The Research Guides provide information about the times, places, and cultures Jack and Annie visit on their Magic Tree House adventures. ABOUT THIS TITLE: Here’s Jack and Annie’s very own guide to the real life world of knights and castles. What was it like to wear armor? What was the food like in castles? This book explores what life was really like in medieval times.