Sant'Alessio Siculo is a comune in the Metropolitan City of Messina in the Italian region Sicily, located about 180 kilometres east of Palermo and about 35 kilometres southwest of Messina.
Its main attraction is a castle built by the Byzantine emperor Alexios I Comnenos in his war against the Normans and the Arabs, who also held it.
Wikipedia https://en.wikipedia.org/wiki/Sant'Alessio_Siculo
Coordinates 37°55'28.179" N 15°20'57.435" E