The museum is devoted to the work of Daniel H. Kahnweiler, friend and discoverer of the Cubists, above all Picasso. He saw the home of his childhood in the residence of his grandparents, and left the town of Rockenhausen his German-speaking library and two picasso-lithographs and numerous exhibition posters. Every two years, the Kahnweiler Prize, endowed with 10,000, - € is awarded.