This lecture focuses on Le Corbusier’s mature phase, highlighting his shift from the clean white geometry of the International Style (as seen in Villa Savoye) to the sculptural, expressive language of Brutalism using béton brut (raw concrete). It examines the Ronchamp Chapel (1955) as a powerful example of asymmetrical, sculptural architecture with thick curved walls, a floating concrete roof, and dramatic use of natural light through deep-set openings and light towers. The lecture contrasts Ronchamp with Villa Savoye to show Corbusier’s evolution from machine-like rationalism to spiritual and poetic expression. It also discusses La Tourette Monastery (1960), lifted on pilotis, emphasizing pure geometric forms, rhythmic monk cells, brise-soleil based on the Modulor system, and the importance of light in religious architecture. The lecture then explores Corbusier’s major contribution to India, especially Chandigarh, designed with Jean-Pierre Jeanneret, Maxwell Fry, and Jane Drew. It explains how projects like the Assembly Building, High Court, Secretariat, and Capitol Complex combine béton brut, pilotis, brise-soleil, ramps, pure geometry, and dramatic roof forms. The session highlights Corbusier’s lasting influence on post-independence Indian architecture and his ability to blend modern principles with regional context, monumentality, light, shadow, and sculptural form.