Tennis recreational players and is also a popular worldwide spectator sport. The four Grand Slam tournaments (also referred to as the Majors) are especially popular: the Australian Open played on hard courts, the French Open played on red clay courts, Wimbledon played on grass courts, and the US Open also played on hard courts. Historians believe that the game's ancient origin lay in 12th century northern France, where a ball was struck with the palm of the hand. Louis X of France was a keen player of jeu de paume ("game of the palm"), which evolved into real tennis, and became
Galerie nationale du Jeu de Paume nearly 4000 works of German "degenerate" art in Berlin in 1939. French resistance curator Rose Valland, who was working at the museum, kept a secret list of all the works passing through, and after the Nazi defeat in 1945 most of these works were thereby returned to their rightful owners. Today, some 70 of Rosenberg's paintings are missing, including: the large Picasso watercolor "Naked Woman on the Beach", painted in Provence in 1923; seven works by Matisse; and the "Portrait of Gabrielle Diot" by Degas. Between 1947 and 1986, it contained the Musée du Jeu de Paume, which held many