That's a great question! The movie "Elf" was actually filmed in multiple locations. The exterior shots of the North Pole were filmed at the Haines Junction in Yukon, Canada. The inside of the toy factory was filmed at the former Hecla factory in Toronto, Canada. The scenes at the department store were shot at the Eaton Centre in Toronto. The scenes at the office building were filmed at the University of Toronto. And the scenes at the Santa house were shot at the Casa Loma in Toronto.