Factual error: Rifles and more so, cannons of the type shown in the movie were not close to being invented in the 1500s.
The Agony and the Ecstasy (1965)
1 mistake - chronological order
Directed by: Carol Reed
Starring: Charlton Heston, Harry Andrews, Rex Harrison, Diane Cilento
Contessina de Medici: Your question insults us both.