Secrets of the CastleSeason 12014 · 5 episodesEpisodes1Why Build a Castle?Peter and Tom set to work learning how to construct a spiral staircase.2Defending the CastleExploring the art of medieval combat and the building of defensive structures.3Inside the CastleThe team enter the surprisingly colourful world of medieval interior design.4The Castle's Community of SkillsThe team uncovers the secrets of the skilled communities who built medieval castles.5Beyond the Castle WallsThe team comes together to help construct a spectacular limestone window for the chapel.