A New York Times Bestseller Explainer-in-Chief David Macaulay updates the worldwide bestseller The New Way Things Work to capture the latest developments in the

'The way things work guidebook' shows you how and why the amazing models you make actually work. Leonard and Mammoth take you through the fundamental principles

"Text and detailed drawings follow the planning and construction of a "typical" castle and adjoining town in thirteenth-century Wales."--Title page verso.