The Five Orders of Architecture (Regola delli cinque ordini d'architettura) is a book on classical architecture by Giacomo Barozzi da Vignola from 1562, and is considered "one of the most successful architectural textbooks ever written", despite having no text apart from the notes and the introduction. Originally published in Italian as Regola delli cinque ordini d'architettura, it has been fully or partially translated in English with different titles, including Canon of the Five Orders of Architecture; Rules of the Five Orders of Architecture; Vignola: an elementary treatise on architecture comprising the complete study of the five orders, with indication of their shadows and the first principles of construction; The Five Orders of Architecture according to Giacomo Barozzio of Vignola, to Which are Added the Greek Orders; and The five orders of architecture, the casting of shadows and the first principles of construction based on the system of Vignola. Source: Wikipedia (en)