Trivia: While Steve McQueen performed most of his own stunts, the only stunt he didn't perform was the 60 foot jump over the Austrian-Swiss border fence. The jump was performed by stuntman Bud Ekins, who later doubled for McQueen in "Bullitt."
Trivia: Myrna Loy was originally meant to be cast as Empress Tsu Hzi, but was reportedly sick of doing "yellowface" roles. As such, Flora Robson got the part.
Trivia: The film was to have run six hours with two intermissions, but it was cut down to four with one.