Castello of Acquafredda is an important example of a fortified structure from the Middle Ages.

The castle is located in Siliqua on a hill of volcanic origin. The construction is due to the famous Pisan nobleman Ugolino Della Gherardesca a controversial medieval political figure quoted by Dante Alighieri in the Divine Comedy. Just the central keep and a few parts of the wall remain however, the view is spectacular after a slightly steep climb, as the castle still rises to a height of 256 metres. During this tour, your guide will take you on a journey through Sardinia's Middle Ages.