The Heyburn Building is a 17-floor, 250-foot (76-m) building in downtown Louisville, Kentucky, United States. In the early 20th century, it was an integral part of the "magic corner" of Fourth Street and Broadway, which rivaled Main Street as Louisville's business district. It occupies the lot that was the location of the Avery mansion, home of Louisville suffragist, Susan Look Avery. This block of West Broadway had been a posh residential corridor prior to the commercial transition of which the Heyburn Building composed a part.