Contents: 1. What is Architectural Theory 2. Vitruvius and Architectural Theory in Antiquity 3. The Vitruvian Tradition and Architectural Theory in the Middle Ages 4. Leone Battista Alberti 5. Vitruvian Tradition in the th Renaissance 6. 16 Century Codification 7. Palladio and the North Italian Humanists 8. The Counter-Reformation, Baroque and Neo-Classicism 9. The Theory of Fortification 10. The Foundation of the French Academy of Architecture 11. Architectural Aesthetics 12. Concepts of Garden 13. Indian Architectural Theory and Practice