Husum (North Frisian: Hüsem) is the capital of the Kreis (district) Nordfriesland in Schleswig-Holstein, Germany. The town was the birthplace of the novelist Theodor Storm, who coined the epithet "the grey town by the sea". It is also the home of the annual international piano festival Raritäten der Klaviermusik (Rarities of Piano Music) founded in 1986.