Sardinia Sardinia Sardinia ( ; ; or ; ; ; ; ) is the second-largest island in the Mediterranean Sea (after Sicily and before Cyprus). It is located west of the Italian Peninsula and to the immediate south of the French island of Corsica. Sardinia is politically a region of Italy, whose official name is "Regione Autonoma della Sardegna" / "Regione Autònoma de Sardigna" (Autonomous Region of Sardinia), and enjoys some degree of domestic autonomy granted by a specific Statute. It is divided into four provinces and a metropolitan city, with Cagliari being the region's capital and its largest city as
Sardinia mainland peninsula. The Strait of Bonifacio is directly north of Sardinia and separates Sardinia from the French island of Corsica. The coasts of Sardinia [ long] are generally high and rocky, with long, relatively straight stretches of coastline, many outstanding headlands, a few wide, deep bays, rias, many inlets and with various smaller islands off the coast. The island has an ancient geoformation and, unlike Sicily and mainland Italy, is not earthquake-prone. Its rocks date in fact from the Palaeozoic Era (up to 500 million years old). Due to long erosion processes, the island's highlands, formed of granite, schist, trachyte,