It is, without a doubt, the most important among the several coastal towers in the area of the Regional Park of Porto Conte; dominating the Tramariglio bay and the tourist centre ArchiMete. It was realized in chalky material at the end of the Sixteenth century, during the Spanish dominion. Today, it is still in good conditions, and from the inside, the dome vault and pillar on the terrace are visible, with the holes which allowed light to penetrate the structure.