Acireale [atʃ.ʃi.re.ˈaː.le] (Sicilian: Jaciriali; locally shortened to Jaci or Aci) is a coastal city and commune in the north-east of the province of Catania, Sicily, Italy, at the foot of Mount Etna, on the coast facing the Ionian Sea. It is a diocese, famous for its churches, including the Neo-Gothic St. Peter's Basilica, St. Sebastian's Basilica in the Sicilian Baroque style, and the 17th century Acireale Cathedral, and a seminary, for the training of priests.