Between the beginning of the 20th century and his death, the dental surgeon George Viau (1855-1939) built up an exceptional collection, both in terms of size - approximately 1,200 works of art - and quality, bringing together the greatest impressionist and post-impressionist names such as Monet, Renoir, Sisley, Pissarro, Degas, Morisot, Toulouse-Lautrec, Cézanne, Van Gogh, Denis, Vuillard, and many others.