Maltese language
The strongest legacy of Islam in Malta is the Maltese language, and most place names (other than the names Malta and Gozo) are Arabic, as are most surnames, e.g. Borg, Cassar, Chetcuti, Farrugia, Fenech, Micallef, Mifsud and Zammit. It has been argued that this survival of the Maltese language, as opposed to the extinction of Siculo-Arabic in Sicily, is probably due to the eventual large-scale conversions to Christianity of the proportionally large Maltese Muslim population.