Art dealers Hildebrand Gurlitt, Karl Buchholz, Ferdinand Moeller and Bernhard Boehmer set up shop in Schloss Niederschonhausen, just outside Berlin, to sell a cache of near-16,000 paintings and sculptures which Hitler and Göring removed from the walls of German museums in 1937–38. They were first put on display in the Haus der Kunst in Munich on 19 July 1937, with the Nazi leaders inviting public mockery by two million visitors who came to view the condemned modern art in the "Degenerate Art Exhibition". Propagandist Joseph Goebbels in a radio broadcast called Germany's degenerate artists "garbage". Hitler opened the Haus der Kunst exhibition with a speech. In it he described German art as suffering "a great and fatal illness".