The quarter of Castello, the historic district of Cagliari, full of monuments of culture and architecture and is extremely popular among tourists. Once on site was located in a fortified castle, and is today part of the quarter is still surrounded with strong walls with bastions. The entrance to the quarter gates are two medieval towers of white limestone, which by a happy coincidence have not been destroyed in the 19th century, the Torre di San Pancrazio and Torre Dell'elefante.

Familiarity with the Castello district, it is best to start from the Torre di San Pancrazio or from Porta dei Leoni. Among the main attractions of the quarter – numerous old churches, like the Cathedral or the Church of Purisima the 16th century, standing on the street via Lamarmora. In the lower part of the Castello is located the Church of Santa Maria del Sacro Monte di pietà, Santa Croce and San Giuseppe. Some churches closed for restoration and are available for inspection only on the outside.

In the past, Costello was the political, religious and administrative center of Cagliari. There are many notable buildings – the former Town Hall (near the Cathedral), the Palazzo Vescovile and the Palace of the Viceroy. A little further on is the Arsenal, now converted into Cittadella dei Museums – Coffin Museums, and beyond that stands the Palazzo Belgrano, which today houses the University of Cagliari. Many private houses in this part of town has retained its historic appearance and aristocratic decoration.

In Castello are also interesting museums. The above Cittadella dei Museums consists of four separate collections, to explore which, passing through the door is an exact copy of the Roman gate of Porta del Popolo. One of the most important collections Cittadella is kept in the National archaeological Museum, which exhibits artifacts relating to the various civilizations that inhabited Sardinia, pottery, statuettes of bronze, dvorgetskya figurines, brass ingots, thread, steles and wonderful jewelry Punic. At the National gallery collection of modern art works, sculptures, paintings, statues and t.d. And Siamese Museum Card has to offer tourists around 1300 items brought from Siam, Laos, Java, Malacca, Singapore and China, coins, articles of ivory, silver jewellery, pottery, weapons. Finally, it is worth visiting the Anatomical wax Museum, which exhibits the 23 parts of the human body, made by the Florentine Clemente, Suzini. And one of the galleries of Cittadella dei Museums offer a wonderful view on Cagliari.