This catalog on the work of the restoration architect Paul Abadie (1812-1884) contains articles on his life, his training, and profession (Claude Laroche), as well as studies of his work: restorations (Françoise Bercé, C. Laroche, J.-M. Leniaud, L. Madeleine, J.-C. Lasserre), building of churches (C. Laroche), Le Sacré-Coeur de Montmartre (F. Loyer, J. Benoist, C. Laroche, N. van der Meer), church furniture and decoration (J.-C. Lasserre), public and residential buildings, and an assessment of Paul Abadie's position in the context of the 19th century. A list of principal collaborators is included.