The Basilica of St. John Lateran, is, by definition, the "mother of all the churches in the world", and represents the ideal trait union between pagan and Christian times. The Basilica was consecrated in 324 by Pope Sylvester I who dedicated it to the Most Holy Saviour. In the ninth century, Pope Sergius III also dedicated it to St. John the Baptist, and in the twelfth century, Pope Lucius II also added St. John the Evangelist. In the eighteenth century, the façade of the Basilica was finally completed with the new façade by Alessandro Galilei, and the statues of the 12 Apostles were placed in Borromini's niches. In the twentieth century, during the restoration of the splendid Cosmatesque floor, the remains of the ancient barracks of the equities were found. On the occasion of the Great Jubilee of 2000, the new Holy Door, the work of the sculptor Floriano Bodini (1933-2005), was inaugurated.The Basilica of St. John Lateran has played an important role throughout history; it was there that all popes were enthroned up until 1870. Nowadays, Basilica di San Giovanni in Laterno is where the Pope, as Bishop of Rome, celebrates Holy Thursday Mass.

Located at the top of the famous Spanish Steps in Piazza di Spagna. The oldest part in Gothic style, covered by pointed cross vaults, was built with stones from the Narbonne region between 1502 and 1519. Towards the middle of the sixteenth century, a new building was added to the Gothic nave, covered by a barrel vault, and closed by a façade adorned with two symmetrical bell towers, the work of Giacomo della Porta and Carlo Maderno. On the right side of the church, stands the Convent, founded by Francesco di Paola in 1494, with the financing of the crown of France. Between the sixteenth and seventeenth centuries, the "royal convent of the Trinità dei Monti" experienced a splendid season, of which memory remains in the wonders kept inside. The frescoes in the cloister are wonderful, with an educational cycle dedicated to the life of the founding saint and a gallery of portraits of the kings of France.

The church Dives in Misericordia, God the Merciful Father, commissioned by Pope John Paul II in memory of the Jubilee of 2000 and designed by the American architect Richard Meier, is characterized by three majestic sails, which form an innovative structure both from an engineering and architectural point of view. The shape sees portions of a circle, which symbolizes the divine, flanked by square shapes that recall the human dimension. The circle houses the church, while the square houses the parish rooms. The roof of the nave is entirely glazed, as are the two façades. The sun, however, never enters the church directly except at a particular time in the afternoon, when, especially in summer, the light filters through a small window behind the presbytery, illuminating the splendid seventeenth-century crucifix.

The construction of the monumental Sant'Andrea della Valle began in 1591 to a design by Gian Francesco Grimaldi and Giacomo Della Porta but continued much further into the following century. In 1608 Carlo Maderno, who was commissioned to complete the building, enlarged the transept and raised the dome. The very high and sumptuous travertine façade, on the other hand, dates back to the second half of the seventeenth century, the work of Carlo Rainaldi, who partly took up Maderno's design, but accentuated the plasticity of the construction elements and the chiaroscuro. The interior of the church is in the shape of a Latin cross. One of them, the Barberini Chapel, is also known as the "Chapel of Tosca" because part of the plot of Puccini's opera is set here. The beautiful dome built by Maderno and inaugurated on November 6, 1622, is inferior in width and height only to that of St. Peter's. The interior of the dome is decorated with the wonderful frescoes made by Giovanni Lanfranco between 1621 and 1625, a masterpiece of Baroque illusionism that brings the sky into the church.The interior of the dome is decorated with the wonderful frescoes made by Giovanni Lanfranco between 1621 and 1625, a masterpiece of Baroque illusionism that brings the sky into the church.

Located in the square of the same name, the Basilica of Sant'Agostino was one of the first Roman churches of the Renaissance, and its origins date back to the 14th century when the Augustinians decided to build a new structure for their convent. The new church, completed in 1420, however, was too small for the needs of the community and too low concerning the Tiber; so, it was rebuilt between 1479 and 1483 by Jacopo di Pietrasanta and Sebastiano Fiorentino, by order of Cardinal Guillaume d’Estouteville. On the main altar, built-in 1627 to a design by Bernini and made by Orazio Torriani, is the Byzantine icon "Virgin with Child" from the church of Santa Sofia in Constantinople. Of particular importance, the altarpiece depicting S. Agostino between S. Giovanni Battista and S. Paolo Eremita by Guercino and on the sides "S. Augustine washes the feet of the Redeemer" and St Augustine Defeating Heresy by Lanfranco, in the chapel of the right transept dedicated to the saint. The court ladies were regular frequenters of the Basilica and had dedicated seats in the front rows to prevent the believers from looking at them and being distracted during the religious functions.

The Papal Basilica of Saint Mary Major was built at the behest of Pope Sixtus III, who dedicated it to Our Lady. Its construction works started in 432 A.D., following the ecumenical council of Ephesus, which had decreed the divine motherhood of Mary by proclaiming her mother of God. The building, which largely preserves its original structure, is one of the jewels of the Capitoline churches, dating back to early Christianity. The main body is divided into three naves that are separated from the aisles by twenty-one columns with Ionic capitals. It is characterized by a wooden truss roof. The basilica stands on the Esquiline Hill and it is ideally connected through Via Merulana to another important Roman basilica, the Basilica of Saint John in Lateran. The Basilica of Saint Mary Major is unique thanks to its extraordinary decorations, which are extremely rich and varied from a theological, ideological, and historical point of view; and an artistic style that resulted from a period of cultural ferment in which the new early Christian trend merged with traditional imperial art.

Built on the ruins of the Temple of Juno Moneta in the sixth century, the Basilica of Santa Maria in Aracoeli stands on the highest peak of the Capitoline Hill. Its name originates from a legend according to which a sibyl predicted the coming of the son of God to Augustus by saying "Haec est ara filii Dei", or "This is the altar of the son of God": hence the name Ara Coeli. Around the year 1000 it became a Benedictine abbey, and later it was passed to the Friars Minor, who renovated it and gave it its current Roman-Gothic appearance. In the Middle Ages, it took on a very important role because the councilors gathered there to discuss the "Res Publica", a sort of new forum in Rome. The Italian popular leader, Cola di Rienzo, gave speeches from the basilica. The election of the city's ringleaders was at the basilica. In 1341 the graduation ceremony of the poet Francesco Petrarca took place at basilica of Saint Mary in Aracoeli. The church has three naves separated by reused columns that are all different from one another. In one of the chapels, the remains of paintings attributed to Pietro Cavallini were found. In the Bufalini Chapel, there is a cycle of frescoes by Pinturicchio that are dedicated to St. Bernardino of Siena, who risked death on the steps of Santa Maria in Aracoeli after being charged of heresy. From the top of the steps of the Basilica, you can enjoy a beautiful view of Rome over the domes of Sant'Andrea della Valle and St. Peter's.

The primitive St. Peter's Basilica, a building of comparable size to the current one, was erected around 320 by Emperor Constantine, in the place where, according to tradition, the apostle Peter was buried. From the middle of the fifteenth century began the long process that, in about two hundred years and with the collaboration of many artists (Bramante, Michelangelo, Bernini), would lead to the complete reconstruction of the primitive Constantinian basilica. Even the current St. Peter's Square with its splendid colonnade was presented in a completely different form: today's appearance is a true masterpiece by Gian Lorenzo Bernini. The imposing seventeenth-century façade by Carlo Maderno gives an idea of the exceptional size of the Basilica, still one of the largest churches in the world. The façade has pilasters and Corinthian columns and is surmounted by an attic crowned by thirteen colossal statues. Designed by Michelangelo and completed by Della Porta and Fontana in 1588-89, the dome surprises for its size and harmony. In the center of the Basilica, above the papal altar, stands Bernini's bronze Baldachin, commissioned by Urban VIII Barberini, with gigantic twisted columns> Inside the Basilica, there is the Museum of the Treasure of St. Peter's Basilica.

In the courtyard of Palazzo dei Conservatori, the fragments of a colossal statue. The construction of the basilica was started by Maxentius in 308, but it was completed by Constantine, who changed its orientation and added a majestic entrance and a portico preceded by a staircase that overcame the difference in height between the Via Sacra and the basilica. The Basilica stood on the hill of Velia, in the area that was once occupied by the Horrea Piperataria, the warehouses where spices were processed and stored. In 1613, the only column which was still standing in the Basilica of Massenzio was moved to a new location: it was erected in front of the Basilica of Santa Maria Maggiore at the behest of Pope Paul V. The redevelopment of the square was carried out by Carlo Maderno. The Basilica of Massenzio had a rectangular shape with three naves and a side entrance hall. The central nave was larger and higher than the lateral ones and it featured eight tall Corinthian columns of Proconnesian marble.

The Basilica of Saints Peter and Paul, located at the highest point of the Eur district and the scene of numerous clashes during the Second World War, is one of the greatest examples of architecture in modern Rome. Dedicated to the Patron Saints of Rome and designed by Arnaldo Franchini, an architect and university professor who worked alongside Marcello Piacentini during the design of numerous architectures of the regime. The Basilica is characterized by a cross shape. It has a reinforced concrete structure with a central cube and a hemispherical dome, the second highest in the city after that of St. Peter's Basilica

The Basilica of Saints Cosmas and Damian is dedicated to the patron saints of medicine, who were martyred in 303 A.D. The building was built in the fourth century by merging two pre-existing classical buildings. In 1512, Cardinal Alessandro Farnese entrusted the basilica to the Franciscans of the Third Order Regular of St. Francis, who still live there today. The church acquired its current appearance around the year 1632, during the papacy of Urban VIII. The basilica was originally accessible from the Via Sacra, through the portal of the Temple of the Divine Romulus. However, it can currently be accessed from Via dei Fori Imperiali, through an atrium overlooked by a section of the opus wall of the ancient Bibliotheca Pacis. The interior of the church features a single nave and a beautiful coffered ceiling painted and gilded with the coat of arms of Urban VIII Barberini and the Glory of the Titular Saints. The apse preserves remarkable mosaics dating back to the VI-VII centuries. On the triumphal arch, you can admire the Apocalypse with the mystical Lamb among the seven candelabra, angels, and symbols of the evangelists. The basin is decorated with the Christ between Saints Peter and Paul, which depicts Christ, Saints Peter and Paul, Saints Cosmas and Damian, St. Theodore, and Pope Felix IV, who holds a model of the church.

The Basilica of St. Paul Fuori le Mura, t is one of the four papal basilicas in Rome, the second largest after St. Peter's. The façade, decorated in the upper band with nineteenth-century mosaics, is the work of Luigi Poletti. The basilica's cloister, the work of Jacopo and Pietro Vassalletto, from which it takes its name, is one of the wonders of thirteenth-century Rome. It has marble columns in pairs, of different types and shapes, decorated with mosaics and colored marbles that support the arches on which stands the epistyle adorned with magnificent mosaics and limited at the top by a white marble frame with the heads of lions, oxen, goats and other animals, from the mouths of which rainwater flows. The Benedictine monks of St. Paul's Abbey, who have been the custodians of the tomb of the Apostle Paul for centuries, created the monastic garden in which they grow herbs and trees mentioned in the Bible. Among the different rooms, you can admire the Garden of the Simples, in which the medicinal plants used in creating the phytotherapeutic remedies available at the Monastic Apothecary are cultivated, according to the millenary Benedictine tradition.