In several scenes, the wax figures can be seen moving and breathing.
The men's blown-out hairstyles, long over the ears and collar, would be considered shaggy during the Edwardian period of the film.
One of the museum exhibits is Willie Grossman, a Berlin butcher who ground his victim up into sausage; he is clearly based on Carl Grossman (1863-1922) whose crimes took place about twenty years after the film's circa 1900 setting.
In the scene where a tour is given of the waxwork, when the Lizzie Borden figure is shown, a boom mic is visibly hanging above the crowd for several seconds.