The Tower of San'Elia is located near the Sella del Diavolo in Cagliari. It has a cone shape and was built of limestone at 139 feet above sea level. The remains are close to a military fort in a strategic position from which you can see almost all the coastal towers in the Gulf of Cagliari.
Sardinia is the second-largest island in the Mediterranean Sea (after Sicily). The area of Sardinia is 24,090 square kilometres (9,301 sq mi). The island is surrounded (clockwise from north) by the French island of Corsica, the Italian Peninsula, Tunisia and the Balearic Islands. Sardinia is a constitutional part of Italy, with a special statute of regional autonomy under the Italian Constitution. http://en.wikipedia.org/wiki/Sardinia