Acireale is also noted for its art and paintings: the oldest academy in Sicily, the Accademia di scienze, lettere e belle arti degli Zelanti e dei Dafnici, is located here.

According to mythology, the tears of Galatea after the death of Ā́cis gave birth to the Ā́cis River, Fiume di Jaci, flowing past Acireale (the ancient Akis or Acium).

[3] In the Middle Ages, the town expanded around the castle (now part of Aci Castello), known as Jachium under the Byzantines, as Al-Yāj (الياج) under the Arabs, and, later, as Aquilia.

The paronymal legend, from which the name of the city and of the hamlets would originate, was the idyll of love between Acis and Galatea, and is introduced by Ovid in the Metamorphoses, by Theocritus, by Virgil, by Posidippus, by Philoxenus, by Callimachus, by Hermenenattes and by Euphorion.

The nymph, desperate for the loss of Acis, begged the gods to bring him back to life and they, accepting her prayers, transformed the shepherd into an eternal river, called Jaci (Akis).

The river Jaci, which has an unknown underground path and is part of the rich Etnean drainage system, flows both in the locality Acque grandi ("acquaranni") between Acireale and Capomulini, under a massive lava bank, and in the village of Santa Maria la Scala (Testa di l’acqua), at the "Molino di Miuccio", with crystal clear and freezing water, as well as north of the district of Santa Caterina (Acqu'e ferru) where it has a characteristic reddish effect, caused by the presence of Iron oxides, that in the popular belief, based on the Ovidian verses, is attributed to the blood of Acis ("u sangu di Jaci", in Sicilian dialect).

[5] In the Villa Belvedere is exhibited a sculptural group of Acis and Galatea, a marble copy made on the pantograph on the model in patinated plaster displayed at the Zelantea Library, the work of Rosario Anastasi of 1846, which represents the epilogue of the myth, the last act, when Galatea, with her dramatic invocation to the gods, wants to resurrect her beloved Acis killed by a stone thrown by Polyphemus.

Probably born from the tradition of the «nevaroli» who transported the snow from the Etna up to the seashore when the refrigerator did not yet exist, in the city the invention of the granita is attributed to the ingenious Francesco Procopio dei Coltelli from Acitrezza that, with the café «le Procope», had much success in 17th-century Paris.