First drawing: 32 cm x 23.4 cm / 2nd drawing = 32cm , a diptych on two different sheets to make the architectural complexity, as well as the visual duality of Le Corbusier's creation, perceptible. The artist has not been identified. He may be an architect, or admiring student of Le Corbusier. Drawings dated September 1961, with sure lines and modeling, paying perfect homage to Le Corbusier. These two drawings were therefore produced five years after the completion of the chapel. In the second drawing, the chapel site is represented from its “excavated” northern part. An extraordinary architecture with a division of the sacred space into three chapels in one. The designer also sketches the wooded site of the Bourlemont hill which offers a 360° panorama of the Haute-Saône and the Vosges, the fullness of which conquered Le Corbusier. With its shell designed like an airplane wing (particularly visible in my first drawing), its asymmetrical plan which frees itself from the transept, its curved walls, and its stained glass windows also painted by Le Corbusier, the Notre-Dame du Haut chapel is considered a masterpiece of modern sacred architecture, an icon of the 20th century listed by UNESCO. On the same site on the Notre-Dame du Haut hill in Ronchamp, in addition to this masterpiece by Le Corbusier, a campanile by Jean Prouvé, the elegant architect, engineer as well as modernist designer whose pieces of furniture are intensely sought after; but also a little below a monastery designed by Renzo Piano, the architect of Beaubourg. Happy town with such an architectural treasure!