Castelluccia Tower is located in the area of Bosco Caggioni, on the elevated coastal road of Pulsano, detached from the service road. First mentioned in the Atlas by cartographer Mario Cartaro in 1613, the structure has a quadrangular base, extends over two levels, and is covered with squared blocks of fossiliferous and spongy yellowish-red tuff stones. The northeast-facing front features three machicolations with respective bartizans, two of which have muzzle-loading guns with a spatula-shaped muzzle.
Castelluccia Tower is part of an integrated anti-pirate defensive system established by the Spanish Viceroyalty from the mid-16th century onwards and guards a coastline rich in coves between Saturo Tower, part of the settlement of Leporano, and the vanished Red Tower. Over time, a staircase with a sloping arch was added to the tower to provide easier access to the upper floor, consisting of a single barrel-vaulted room with a fireplace.
In 1842, it was assigned for use to the customs force and later to the National Domain and the Navy. In 1948, the building was used as a base for an archaeological excavation that uncovered a settlement dating back to the Bronze Age and the Iron Age (13th - 10th century BCE). Currently, the tower shows significant structural decay.