Ortigia Sound System is an Italian mixed-genre music festival happening every summer in the largest island of the Mediterranean sea, Sicily. More precisely, the festival takes place in Syracuse, an historic city in the southeast of the Sicilian region known for its Greek, Roman and Byzantine influences, recently listed by UNESCO as a World Heritage Site. Among different venues, the festival is mainly based in Ortigia, a picturesque island which is also the historical centre and the heart of the city of Syracuse.