How did the Impressionists paint? Painting Light is not just another Impressionist exhibition - it examines some of the most famous canvases of the last century, looking for clues as to where the paintings were made, under what conditions and, in some cases, by whom. The exhibition brings together over sixty masterpieces by Van Gogh, Monet, Manet ,Signac, Sisley, Morisot and Renoir and others from the Wallraf-Richartz Museum Foundation Corboud, Cologne, and other museums.