Directed by: Richard Fleischer
Starring: Kirk Douglas, Ernest Borgnine, Tony Curtis, Janet Leigh
Visible crew/equipment: While Raynar and Einar are arguing about the wench, a crewman surreptitiously sneaks in a mic at the bottom left of the screen. (00:47:54)
Visible crew/equipment: When Kirk Douglas returns in the viking ship to his home fjord, many vehicles can be seen on the road through the trees on the other side of the water. Vauxhall Vikings perhaps?
Continuity mistake: When Kirk Douglas smashes through the chapel window near the end of the film, you can clearly see that the window isn't stained glass - it's colored paper. Or perhaps papier-mache of some sort.
Trivia: Ernest Borgnine plays Ragnar, the father of Einar (Kirk Douglas). In real life Borgnine is only one and a half months younger than Douglas.