Marlene Dietrich's first film in Technicolor.
Gilbert Roland was originally cast as Boris Androvsky.
Merle Oberon was originally signed to play Domini, but was "bought off" by David O. Selznick at a cost of $25,000.
All of the "Arabic" spoken in the film is gibberish.
Among the actors David O. Selznick considered and tested for the role of the monk Boris Androvsky before casting Charles Boyer were Robert Taylor, Vincent Price, Basil Rathbone, George Brent, Laurence Olivier, Fredric March, Brian Aherne, Noel Coward, Maurice Evans, Robert Donat, Ivor Novello, John Gielgud and Jean Gabin.
For the role of Capt. De Trevignac, David Niven, Cesar Romero and Ray Milland were tested before 'Alan Marshal (I)' was cast.
This is the movie that Cyndi Lauper is watching at the beginning of the video for "Time After Time".