The Dearborn complex draws about 1.5 million visitors annually. During the next few years, it expects to boost attendance to more than 2 million, which could elevate its profile as a preeminent international cultural attraction, said Steve Hamp, president of the Henry Ford, an umbrella name that includes Greenfield Village, the Henry Ford Museum, the IMAX Theatre, the Benson Ford Research Center, and Rouge Plant tours starting in spring 2004.