Tour de l'Aigle, Medieval tower in Castello district, Cagliari, Italy

Torre dell'Aquila is a defensive tower in the Castello district with limestone walls and wooden galleries on its eastern side that reflect Pisan design. The structure was originally taller but lost its upper portion due to historical bombardments.

Giovanni Capula, who also designed the towers of the Elephant and San Pancrazio, planned this tower around the early 14th century, when the Pisans strengthened Cagliari's fortifications after Sardinia was granted to the Aragonese in 1297. English bombardment in 1708, Spanish in 1717 and French in 1793 destroyed its upper part. The ruins were partly demolished and partly incorporated into the 19th-century Palazzo Boyl.

The tower's official name is Torre del Leone, but it is commonly called Torre dell'Aquila after a bird of prey carved on the large lower door that gave access to Castello. The carving, not a city emblem, gave the tower its popular name.

The tower is accessible through Via Mario de Candia 8 in the Castello district and serves as one of the quarter's entrance points. Visitors should note that steep paths and narrow streets in the district may make exploration challenging.

The tower's original name, Torre del Leone, was replaced by Torre dell'Aquila after a bird of prey carved on the large lower door that gave access to Castello. The upper part was destroyed by bombardments in 1708, 1717 and 1793; the ruins were later partly demolished and partly incorporated into the 19th-century Palazzo Boyl.