St. Michele's church was built over St. Michele's and St. Egidio's oratory, at the end of 17th century, as headquarters of the Jesuit order. It is located next to the ancient "House of the Novitiate", where today there is the Military Hospital, and both share the same entrance. Architecture, decorations, sculptures and pictures shielded inside , make the Church one of the most important example of Baroque art in the city.

The inside has an irregular octagonal plan, with four  communicating chapels for each side, and morever, it is very rich in decorations; frescos, plasters, polychrome marbles and sculptures represent  the great part of decors.

A vestry with a rectangular form was built at the end of 18th century, in Rococo style, extremely rich in decors,frescos,pictures, floors and front doors :among them, we can find selected pictures representing " The Rosarium Misteries", and sculptures by the Sardinian artisan Giuseppe Antonio Lonis, representing "The Passion Misteries", which during the Holy Week, are carried around the street.

The church, date back to 1650, is located in the same place where before there was the church of Vergine della Salute, in the historical district of Villanova. It is officiated by the Franciscan fathers of Frati Minori's order, housed in the neighboring convent.

The facade has a gable shape, in a modest style, painted in  a brighting ochre colour. It is possible to enter into the church through a portal; the inside is composed by a single nave with  a barrel vault, and three chapels for each side with round arches. One of them, is dedicated to San Salvatore from Horta, and there,is preserved a shrine with the Saint's relics.

Saint Luciferus Church has a facade,divided into two level by a cornice: in the upper level there are an oculus and two rectangular opening, while in the lower, there is the front door, framed by two granitic columns. At the core of the facade, you can see the City's coat of arms; to the side, two statues with two dogs on the top,as symbol of Domenican order, who officiated the temple for a long time. The inside has only a nave, with a barrel vault and three connecting chapels.

The Church of Saint Gregorio Magno, named after the famous Pope and doctor of the Church, is located in Pirri and its construction dates back to the seventies of the twentieth century. A square surrounded by a metal fence precedes the sacred building. The simple and flat-paneled facade is embellished with the works of the artists Soriga and Sciola. The interior is characterized by a single nave, with massive pillars that serve as a support and decoration.

The church is flanked by  the vast complex of former College of Scolopi , which now houses the Artistic Lyceum. The renovation began in 1663, after the release of the buildings used as places of worship which had been banned until that year . The works ended  only in late 1735 because of a long pause for unknown reasons in the first two decades of the 18th century. Restored and reopened to the public after the war, was closed again during the 70s. Since then, due to the endless renovation , the monument is not open and is in a total state of disrepair.

The building has significant differences in comparison with the previous places of worship  in Cagliari , probably for the Scolopi's will to fulfill the functions of popular education , as well as worship. This characteristic does not exclude the twin resemblance with almost all the other  Scolopi's buildings in the rest of Italy , often unchanging except for a few details in the inside, influenced by the local culture.The church, in Baroc Style, shows a harmonious main façade with a terminal plate , punctuated by pilasters of Ionic's capital. The portal is surmounted by a cornice broken curve tympanum, with the Scolopi's coat of arms in the inside.

The interior has a single nave with a barrel vault , with three communicating chapels for  every side and  a deep chancel covered by a dome on an octagonal tambour. It has often been noted that the technical approach is similar to the Dome of Cagliari.

The temple was decorated with many artworks, some of which are unfortunately lost ,  while others  are currently stored in various churches in the city . Into the church, is still possible to see  the imposing altar , date back to 1777 ,  by the sculptor Giovanni Battista Franco ,  in polychrome marble, and the marble pulpit date back to the same period . The last chapel ,on the right side, contains one of the bombs dropped on the College in 1793 , during the siege of the French, who tried to conquer the city , accompanied by a commemorative stone of the event. The vestry is decorated with attractive wooden furniture and murals that represent the foundation of the Scolopi's  order.

The Church of Saint Giuseppe is located in via Toti, in Pirri. Erected in the 1950s, the works ended after eight years in 1966. The style of the building is characterized by simple lines combined with geometric shapes. Embellished with a stone path, flower beds and palm trees, on the facade there are three wooden doors surmounted by an ogival-shaped opening. The interior instead is characterized by a division into three naves with the central one raised compared to the side ones.

The Church of Saint Giovanni Battista is located in the Villanova district, in via San Giovanni and hosts the seat of the Archconfraternity of Solitude, active in the organization of some suggestive rites related to Holy Week. Probably erected around the fifteenth century it underwent restoration and the current facade, in neo-Romanesque style, dates back to the twentieth century. The portal is surmounted by a frescoed lunette depicting Saint John the Baptist intent on playing with a lamb, a symbol of Christ.

The Church of Saint Giacomo is one of the parish priests of the Villanova district and overlooks the homonymous square. It was probably built around the middle of the fourteenth century as reported by an ordination of the councilors of Castello and represents an important testimony of the Catalan Gothic architecture in the city. It was restored between the eighteenth and nineteenth centuries and the current facade, the work of the architect Gaetano Cima, presents stylistic features typical of the neoclassical language.

The Church of Saint Francesco da Paola is also known by the name of San Francesco al Molo. Located along via Roma and in front of the port, it is officiated by the minimum friars who dedicated the title to the founder of the religious order since 1907. According to tradition, the saint performed a miracle freeing Cagliari from the terrible drought of 1739. The facade in style Classic dates back to 1932 and the lower part has a portico with three round arches. Inside stands a sumptuous late eighteenth century altar by the artist Giovanni Battista Spazzi.

The Church of Saint Francesco d'Assisi overlooks via Piemonte, in the La Vega district. Entrusted to the conventual friars who live in the nearby convent, the title is dedicated to the famous religious from Assisi. Built between the fifties and sixties of the twentieth century on a project by the engineer Marco Piloni, it has a dark stone facade decorated with a polychrome glass window.