The Rolls-Royce used in the film was a pale blue 1931 Phantom II Barker sedanca de ville, which MGM technicians covered with twenty coats of yellow paint; a few coats of black were added to the top of the hood, the roof, and the wings.
In October 2003, the Chicago Tribune reported that the yellow Rolls-Royce is owned by Neal Kirkham of Saratoga, California.
The winding mountain road on which Ingrid Bergman and Oman Sharif head to Yugoslavia in this film's third segment was also the location for another car scene that same year: The race between James Bond's Aston-Martin and a red Mustang in Goldfinger.
This was Joyce Grenfell's final film before her death on November 30, 1979, at the age of sixty-nine.
Moira Lister was infuriated when Rex Harrison insisted that most of her lines be cut, and they were.
Very odd casting choices: French Moreau plays English aristocrat. Egyptian Sharif plays Yugoslav freedom fighter. French Delon plays Italian photographer. Swedish Bergman plays American grande dame.
This was Anthony Asquith's final film as a director before his death on February 20, 1968, at the age of sixty-five.
A decade before his decidedly secondary role in this film, Edmund Purdom had signed a long-term contract with M-G-M and was being touted by Hollywood gossip columnist Hedda Hopper as "The most exciting new leading man of the year!" But then his highest profile (and most expensively budgeted) film The Egyptian bombed at the box office, and Purdom's private life began to be an issue - he openly admitted to having an extramarital affair with Linda Christian (the wife of Tyrone Power at the time). He was deemed to have "gone Hollywood" in record time, and soon returned to Europe, where his career lasted decades, but never achieved the real stardom those early years seemed to promise.
Hugh O'Brian and Ann-Margret were originally lined up for the roles of Stefano and Mae Jenkins, respectively.
This film's writer and director, Terrace Rattigan and Anthony Asquith, collaborated on several films. When this film was green-lighted, they had just had their biggest box office success, The VIPs, which co-starred Liz Taylor with Richard Burton, and won a Best Supporting Actress Oscar for Margaret Rutherford.