The 33-room French château-style mansion (1904) that houses the American Swedish Institute was built for Swedish entrepreneur Swan Turnblad. With its raucous assemblage of turrets, balconies, pillars and gables, the gray limestone structure resembles a fairy-tale castle. In 1929 the house became the headquarters of the American Swedish Institute, created to "foster and preserve Swedish culture in America." The interior of the house showcases intricately carved woodworkaa as well as 11 rare porcelain-tile kakelugnar (stoves), each of a different design. Upper floors contain Scandinavian artifacts ranging from a 5C AD pre-Viking drinking vessel to a 600-piece collection of contemporary glasswork.