This beautiful PowerPoint Presentation is a good introduction for a lesson on castles. It gives a brief overview about castles, castle defences and different ways to attack a castle.The different topics in the presentation are:- Why were castles built? (2 slides)- Evolution of castles (2 slides)- Building a castle - Guédelon (1 slide)- Parts of a castle (1 slide)- Castle defences (Walls, Machicolations, Battlements, Moats, etc.) (6 slides)- Attacking a castle (Catapults, Trebuchets, Battering Ra