Illustrations by
Viollet-le-Duc, Eugène Emmanuel

Eugène Emmanuel Viollet-le-Duc was a French architect and author who restored many prominent medieval landmarks in France, including those which had been damaged or abandoned during the French Revolution. His major restoration projects included Notre-Dame Cathedral, the Basilica of Saint Denis, Mont Saint-Michel, Sainte-Chapelle, and the medieval walls of the city of Carcassonne. His later writings on the relationship between form and function in architecture had a notable influence on a new generation of architects, including Antoni Gaudí, Victor Horta, and Louis Sullivan.