Find out exactly what goes on inside a medieval castle in this impeccably stylish picture book from the National Trust. How many people does it take to build a castle? And what exactly does each person do? Discover masons to merchants and bakers to blacksmiths in this unique take on the classic rhyme 'This is the House that Jack Built'. Explore what happens inside the castle the king built with striking retro artwork from illustrator Tom Froese and a carefully researched rollicking rhyme from author Rebecca Colby.