Our Lady of the Snows is a Marian title that originated around the Basilica of Saint Mary Major in Rome. Tradition tells that in the 4th century, extraordinary snow fell in midsummer on the Esquiline Hill to indicate the site of a church dedicated to Mary. Pope Liberius and a Roman patrician are said to have received the announcement of this sign in a dream. The story is not attested by contemporary witnesses to the supposed events, but it inspired mosaics, paintings, and a celebration that is still held on August 5. Behind the miraculous snow also lies the real history of one of Rome's oldest great Marian basilicas.
| Location | Basilica of Saint Mary Major, Rome |
|---|---|
| Tradition | Snowfall on the Esquiline, in 358 according to the story |
| Figures | Pope Liberius and the patrician John |
| Feast | August 5, dedication of Saint Mary Major |
| Main image | Summer snow, Mary, and the basilica's plan |
| Another sanctuary treasure | Salus Populi Romani icon |
The August snow on the Esquiline Hill
The legend of Our Lady of the Snows tells that a Roman patrician named John and his wife wished to dedicate part of their wealth to a religious work. Mary appeared to them in a dream, as well as to Pope Liberius, and indicated that a church should be built where snow would fall during the night. The next day, the Esquiline Hill was said to be covered with a white blanket despite the summer heat.
The pope is then said to have traced the boundaries of the future building in the snow. The story gives its name to Our Lady of the Snows and is one of the most famous episodes in Rome's memory of Mary. It must nevertheless be placed within the medieval tradition of foundation stories, since 4th-century documents do not allow all its details to be verified.
The image's power comes from the contrast between snow and summer. In the language of legend, the unexpected event reveals the choice of a site consecrated to prayer.
Pope Liberius and the first church
Pope Liberius served as pope in the 4th century. Tradition attributes to him the early church located near the site of today's Saint Mary Major. The Liber Pontificalis mentions a basilica associated with his name, but the surviving information is limited and is not sufficient to fully reconstruct its form.
The present basilica mainly dates from the 5th century, during the pontificate of Sixtus III. Its construction took place amid the development of the cult of Mary, at a time marked by debates over the title Mother of God and by the Council of Ephesus in 431.
The distinction between Liberius's church, the snow legend, and the 5th-century basilica is essential for understanding the monument. The three elements belong to different stages of Roman religious history.
Saint Mary Major, a great basilica of Christian antiquity
The Basilica of Saint Mary Major stands on the Esquiline and preserves a significant part of its early Christian structures. It is one of Rome's four major papal basilicas and holds an important place in the city's heritage. The mosaics in the nave and triumphal arch testify to the artistic richness of late antiquity.
The architecture underwent successive transformations, with chapels, ceilings, and decorative elements added over the centuries. The building thus brings together several periods in the history of Christian art, from ancient mosaics to the great ensembles of the Renaissance and Baroque periods.
The memory of Our Lady of the Snows remains attached to this basilica, but the building also has a much broader liturgical vocation, connected to Mary Mother of God and to the history of Rome's Christian community.
The mosaics tell the miracle of the snow
The façade of Saint Mary Major preserves mosaics that tell the story of the snow and the foundation of the church. Created around the turn of the 13th and 14th centuries, these works show how the legend was incorporated into the sanctuary's artistic program. The viewer successively discovers the dream, the snow, and the acts of foundation.
These mosaics are direct evidence of the story's spread in the Middle Ages, not images created in the 4th century. Their historical importance is therefore twofold: they reveal the content of the tradition and show how a great basilica chose to tell the story of its origins.
Visitors can compare these works with liturgical texts and foundation stories. Art becomes a means of transmitting the sanctuary's memory, even when the elements of the legend cannot be established as documented physical events.
The Salus Populi Romani icon
Saint Mary Major also houses the icon of the Salus Populi Romani, “salvation of the Roman people.” This image of Mary and the Child Jesus has its own history and devotion, distinct from the August snow. It accompanied several processions and prayers held in the city, particularly during periods of epidemic and danger.
The popes have shown great veneration for this icon. It represents the relationship between the Roman people and a Marian image long regarded as a protector of the city. Its presence in the basilica enriches the meaning of Our Lady of the Snows without allowing the two traditions to be confused.
The icon shows Mary carrying the Child Jesus in a visual language inherited from early Christian painting. It belongs to a different type of representation from the scenes of the snow and the foundation.
August 5 and the white petals of the celebration
On August 5, the basilica celebrates the anniversary of its dedication and the traditional memory of Our Lady of the Snows. A shower of white petals recalls the sign of the summer snow. This ceremony is spectacular, but it forms part of the sanctuary's liturgy and its way of transmitting its history.
In 2024, Francis offered a meditation on snow as an image of grace received freely. This interpretation helps explain the tradition's spiritual significance without making the value of the site depend on meteorological verification of an event described several centuries after its supposed time.
The title was later adopted by other churches, particularly in mountainous regions. Each has its own history, but Rome remains the principal center of the memory of Our Lady of the Snows.
The snow painted on the façade and the memory of Rome
The medieval mosaics of Saint Mary Major play an important role in transmitting the legend. They depict the dream of the patrician and the pope, followed by the snow that is said to have marked the site of the sanctuary. Art historians associate them with the program created around Filippo Rusuti at the turn of the 14th century.
Their location on the façade allows the faithful to discover the story before even entering the basilica. The image serves as a threshold between the city and the sanctuary, recalling a religious origin that the present architecture alone cannot fully convey. The mosaics thus testify to the place Our Lady of the Snows came to occupy in Roman memory several centuries after the pontificate of Liberius.
The preservation of such an ensemble also makes it possible to distinguish the stages of the building's material history. The 5th-century basilica and the medieval images do not belong to the same construction campaign, but they respond to one another in the life of the monument.
This dialogue between ancient architecture, foundation painting, and the present-day celebration with white petals is one of the distinctive features of Roman devotion to Our Lady of the Snows.
Sources and references
Papal Basilica of Saint Mary Major, August 5, 2026 celebrations and the memory of the snow.
Holy See, history of Saint Mary Major and the tradition of Liberius.
Francis, homily of August 5, 2024, meaning of the snow and the Salus Populi Romani.
Illustration: Masolino da Panicale, The Miracle of the Snow, 15th century, public domain. Authentic image source, without artificial generation.
