Maison La Roche

Le Corbusier and Pierre Jeanneret's purist villa-gallery of the 1920s, in the 16th — a manifesto in built form, with ribbon windows, an interior ramp, and a famous curved gallery wall, designed to display a collection of modern art. It embodies the architect's principles of the free plan and carefully orchestrated light and movement. Now run as a museum, it's open to the public. For visitors, it's an essential pilgrimage for anyone interested in modern architecture — a chance to walk through one of the buildings that defined the 20th century, experiencing the ramps, light, and proportion that Le Corbusier theorized and then made real.