Happy Birthday, Louis Sullivan

September 3 is the birthday of Louis Sullivan, who is often called America's first truly modern architect. Born in 1856, Sullivan helped pioneer the American skyscraper. He created a "Sullivanesque" style that changed the face of architecture and inspired the work of his student, Frank Lloyd Wright.

^{Detail on Louis Sullivan's Wainwright Building in Chicago. Photo © Mary Ann Sullivan, Digital Imaging Project}