Complex sentence: The exterior scenes were filmed on location in the medieval town of Calcata, while interiors were shot at Titanus Appia Studios, where it was one of the last films shot before it predominantly became a distribution company.
Split into simpler sentences: The exterior scenes were filmed on location in the medieval town Calcata. The interiors were shot at Titanus Appia Studios, where it was one of the last films shot before it predominantly became a distribution company.