Henri Matisse, 1905. The Fauvist breakthrough painted on the Catalan coast. National Gallery of Art, Washington.
From Wikipedia
The Open Window, also known as Open Window, Collioure, is a painting by Henri Matisse. The work, an oil on canvas, was painted in 1905 and exhibited at the Salon d'Automne in Paris the same year. It was bequeathed in 1998 by the estate of Mrs. John Hay Whitney to the National Gallery of Art, Washington, DC.