The Burg Grünwald with its eventful history served the comedian Karl Valentin as a retreat and inspiration for his well-known satirical song „Ja, so warn’s, die altn Rittersleut“. To this day, the universally known classic is still sung and continued in new verses.
The exhibition „Karl Valentin und die alten Rittersleut“ at the Burg Grünwald – a joint project of the Munich association Forum Humor und komische Kunst and the Archäologische Staatssammlung – explores the fascination that uniforms, knights and the Middle Ages held for Karl Valentin (and also for his partner Liesl Karlstadt) and throughout his entire artistic life. From 1914 onward, knights repeatedly appear in Valentin's programmes; in 1924 he wrote his two-act play „Raubritter vor München“, which premiered on 1 April of that same year at the Münchner Kammerspiele.