Corleone is a town in central Sicily. Historically, many mafia bosses have come from Corleone. The anti-Mafia archive and museum is housed in Corleone (unfortunately not open when we visited).
In fiction, Corleone is the birthplace of Vito Corleone in the Godfather novel and movies. However, the scenes in the Godfather trilogy purportedly filmed in Corleone were actually filmed in other Sicilian locations.