At least seven different languages were spoken on the set, as cast and crew came from all over the world.
It was decided that the character of Greta be a redhead instead of a blonde in order to somewhat disassociate her from Ilsa.
After the production wrapped, co-stars and real-life married couple Dyanne Thorne and Howard Maurer took the opportunity to go on vacation in Europe. In fact, director Jesús Franco gave them an itinerary of places to visit for their trip.