Sharon Stone rang director Mark Rydell repeatedly, begging for a part in the film. Rydell automatically assumed that she was after the part of the mistress, and was quite surprised when Stone revealed that she wanted to play the frigid wife.
The unusual clock is a replica of a "Congreve" clock. It is based on a design by the English engineer, William Congreve.
The reflecting pool in front of the museum was a temporary creation for the movie shoot. It wasn't until 2010 that a permanent reflecting pool was constructed there.
In a recorded TV interview with UK film critic Barry Norman in 1995 during her press tour for Casino, Sharon Stone explained that the original cut of the movie was in her opinion "a very beautiful movie" but that it got recut by the studio.