In the film, Amytis helps Hannibal swim the Tiber River to take a closer look at Rome's fortifications.

The film features many historical characters, including Roman generals Fabius Maximus and Scipio Africanus who appears briefly, in addition to Hannibal.

Jupiter's Darling was based on Robert E. Sherwood's anti-war comedy play The Road to Rome (1927).

It was bought by MGM in April 1933 who announced they would make a movie from the play, potentially as a star vehicle for Clark Gable.

[6] Rights appear to have lapsed because, in April 1939, MGM announced they had purchased the property again as a vehicle for Gable and Myrna Loy with Joseph L. Mankiewicz to produce.

[8] In January 1950, MGM announced that Charles Schnee had just completed a script for Clarence Brown to direct and that they hoped Kirk Douglas to star.

In January 1954, MGM announced they would turn the play into a musical called Jupiter's Darling starring Esther Williams and Howard Keel.

[11] In her memoirs, Williams said she had been on maternity leave for three months while pregnant with daughter Susan, and had assumed that she would get straight to work on the film Athena.

[3] Marge and Gower Champion joined the cast; Howard Keel signed a new long-term contract with MGM in April.

She was fitted with a prosthesis made from latex that covered her nose and ears that prevented water from rushing in.

[17] In one of the film's scenes, Amytis, while fleeing from Hannibal and his soldiers, rides a horse over the edges of a cliff on the Tiber River.

Dorothy Kingsley, who wrote the script, later said she wanted to do a musical version of Road to Rome: It was a satire and, in fact, we even had Hannibal's elephants painted pastel colors—orange and green.