 To save production costs, Paramount originally wanted the entire  film to be shot in Hollywood. Another city considered was Kansas  City, Missouri, which was actively scouted for locations before it  was finally decided to use the Hollywood back lots. However, when  production designer Dean Tavoularis (qv) threatened to add two  stories to each back lot building in order to replicate the look of  New York City, the studio relented and allowed for shooting in New  York. In reality, over 100 New York locations were utilized in the  finished film.