Palazzo Boyle - one of the most important historical and artistic point of view of the buildings of the old center of Cagliari. It was built in 1840 designed by Carlo Pilo Boyle, Marquis Putifigari, military general and a descendant of Filippo Pilot Boyle, who in the 14th century helped to defeat the Pisans and Aragonese to seize the fortress of Cagliari. At the end of the 19th century Palazzo belonged to the Rossi family, which left few letters «R», carved on the windows. Today the owners of Palazzo Boyle is a graph of the Marche region Tomassini-Barbarossa.

The palace was built in the neoclassical style, as well as the Porta del Reggio military arsenal and Porta Cristina - two other creations Carlo Pilo Boyle. Palazzo is a landmark marble balustrade adorned with four statues - each symbolizing one of the seasons. In the center of the carved coat of arms: a hand holding her hair ("saw" in the Sardinian dialect) - means a family of Pilot, the bull ("battle" in the Sardinian) - belongs to the family Boyle, a red banner with gold leaf - a symbol of the Aragonese dynasty.

An integral part of the Palazzo Boyle is the Torre del Leone - lion Tower (sometimes incorrectly called Torre del Aquila - Eagle). It was built by the architect Giovanni Capula, the author of the other towers Cagliari - Torre del Elefante and Torre di San Pancrazio. In 1708, the year the tower was seriously damaged during an attack by British troops in the city, and then, in 1717, the year - from the Spanish guns, and in 1798, the year - during the French siege of Cagliari. Then she lost the upper part and, in practice, was in ruins.