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 de Paume, art dealer Bruno Lohse staged 20 expositions of the newly looted art objects, especially for Göring, from which Göring selected at least 594 pieces for his own collection; the rest was destined for the Führermuseum in Linz. So called "degenerate art" (modern art "unworthy" in the eyes of the Nazis) was legally banned from entering Germany, and so once designated was held in what was called the Martyr's Room at the Jeu de Paume. Much of Paul Rosenberg's professional dealership and personal collection were subsequently so designated by the Nazis. Following Joseph Goebbels's earlier private decree to sell