Harrington ARTS Center houses non-profit institutions of international importance: A World of Accordions Museum (World's largest, America's only significant collection of accordion-family instruments, cultural artifacts, documents, art objects, library). Accordion-Concertina Repair and Technicians' School (professional education, workshops). Hanni Strahl Concert Series. Duane Sellman Special Exhibits Area. Accordion Concertina Music (instruction, entertainment, sales, service). Facilities available for weddings, special events, meetings.