The towers were, on average, rectangular and circular.
The square towers were organized with the purpose of sighting and to give shelter to the population in the event of a landing of pirates "turcheschi".
These towers (made ​​in part with tax exemptions approved by Genoa, in part with the system of "Sequella") were connected to each other because of fires signage and extended from the coast to inland villages to form a ring of light communications: the signals they used a double code of communication with the lumen clean and clear, said signs of the net, people are warned of the arrival of ships with allies and friends as flashing lights or fire bad is signaled enemy ships operating so that the number of intermittent warned about the number of ships on the horizon and so the direction of the smoke could indicate, if possible, place of origin. (5 years and 2951 days ago)
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