The Klutz How to Build Castles book comes with a deck of 58 beautifully illustrated laminated leaves, perforated to break into 150 cards in four different shapes. Every card is notched to fit neatly and securely with every other card. Assemble the cards any way you want to create freestanding fantasy fortresses. The book gives specific guidelines for creating walls, floors, roofs, towers, spires, bridges and other architectural elements, along with inspirational photos of some of the zillion variations possible. Altogether, there are enough cards in one deck to build a small village or one satisfyingly towering castle big enough to cover a school desk.