It is now agreed that the present church was built on the Cispian spur of Rome's
Esquiline Hill under
Pope Celestine I (422–432) not under
Pope Sixtus III (432–440), who consecrated the basilica on 5 August 434 to the Virgin Mary. The dedicatory inscription on the triumphal arch, (Sixtus the bishop to the people of God), is an indication of that Pope's role in the construction. The church retains the core of its original structure, despite several additional construction projects and damage by the
earthquake of 1348. Church building in Rome in this period, as exemplified in Santa Maria Maggiore, was inspired by the idea of Rome being not just the center of the world of the
Roman Empire, as it was seen in the classical period, but the center of the Christian world. Santa Maria Maggiore, one of the first churches built to celebrate the Virgin Mary, was erected immediately after the
Council of Ephesus of 431, which proclaimed Mary Mother of God.
Pope Sixtus III built it to commemorate this decision. Certainly, the atmosphere that generated the council gave rise also to the mosaics that adorn the interior of the dedication: "whatever the precise connection was between council and church it is clear that the planners of the decoration belong to a period of concentrated debates on nature and status of the Virgin and incarnate Christ." depict scenes of her life and that of Christ, and scenes from the
Old Testament: Moses striking the
Red Sea, and Egyptians drowning in the Red Sea.
Richard Krautheimer attributes the magnificence of the work also to the abundant revenue accruing to the papacy at the time from land holdings acquired by the Catholic Church during the 4th and 5th centuries on the Italian peninsula: "Some of these holdings were locally controlled; the majority as early as the end of the 5th century were administered directly from Rome with great efficiency: a central accounting system was involved in the papal chancery; and a budget was apparently prepared, one part of the income going to the papal administration, another to the needs of the clergy, a third to the maintenance of church buildings, a fourth to charity. These fines enabled the papacy to carry out through the 5th century an ambitious building program, including Santa Maria Maggiore." Miri Rubin believes that the building of the basilica was influenced also by seeing Mary as one who could represent the imperial ideals of classical Rome, bringing together the old Rome and the new Christian Rome: "In Rome, the city of
martyrs, if no longer of emperors, Mary was a figure that could credibly carry imperial memories and representations." in 1842
Gregory the Great may have been inspired by Byzantine devotions to the
Theotokos (Mother of God) when after becoming Pope during a plague in 590 that had taken the life of his predecessor, he ordered for seven processions to march through the city of Rome chanting Psalms and Kyrie Eleison, in order to appease the wrath of God. The processions began in different parts of the city, but rather than finally converging on St Peter's, who was always the traditional protector of Rome, he instead ordered the processions to converge on Santa Maria Maggiore instead. When the popes returned to Rome after the period of the
Avignon papacy, the buildings of the basilica became a temporary
Palace of the Popes due to the deteriorated state of the
Lateran Palace. The papal residence was later moved to the
Palace of the Vatican in what is now
Vatican City. The basilica was restored, redecorated and extended by various popes, including
Eugene III (1145–1153),
Nicholas IV (1288–1292),
Clement X (1670–1676), and
Benedict XIV (1740–1758), who in the 1740s commissioned
Ferdinando Fuga to build the present façade and to modify the interior. The interior of the Santa Maria Maggiore underwent a broad renovation encompassing all of its altars between the years 1575 and 1630. In 1966, archaeologists excavating under the basilica found the remains of a Roman building including an
imperial calendar with
fasti and
agricultural annotations and illustrations. On the basis of the calendar, the ruins have been dated to by
Salzman and to the 4th century by Magi. In 2025,
Pope Francis was buried at the basilica in the side nave between the Sforza Chapel and the Pauline Chapel. ==Architecture==