Castelmola is a comune in the Province of Messina in the Italian region Sicily, located about 170 kilometres east of Palermo and about 40 kil…Castelmola is a comune in the Province of Messina in the Italian region Sicily, located about 170 kilometres east of Palermo and about 40 kilometres southwest of Messina. As of 31 December 2004, it had a population of 1,107 and an area of 16.4 square kilometres. It is one of I Borghi più belli d'Italia.