Ronchamp : Le Corbusier. Informally known as "Ronchamp", the chapel of Notre Dame du Haut in Ronchamp (French: Chapelle Notre-Dame-du-Haut de Ronchamp), completed in 1954, is one of the finest examples of the architecture of Franco-Swiss architect Le Corbusier and one of the most important examples of twentieth-century religious architecture.
Ville Savoye, Le Corbusier. Located in Poissy on the outskirts of Paris. Built between 1928-1930. It's been restored as a house-museum and is currently classified as a French National Historic Landmark.