It Happened at the World 's Fair is a 1963 American musical film starring Elvis Presley as a cropdusting pilot . It was filmed in Seattle , Washington , site of the Century 21 Exposition , the 1962 World 's Fair . The governor of Washington at the time , Albert Rosellini , suggested the setting to Metro - Goldwyn - Mayer executives . The film made $2.25 million at the box office .

Question: where was it happened at the world fair filmed
Answer: Seattle , Washington