Walking Through Centuries: The Four Basilicas That Define Rome

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Rome is home to countless churches, but four of them hold a unique place in the story of Christianity. These are the Major Papal Basilicas: St Peter’s, St John Lateran, St Mary Major, and St Paul Outside the Walls. Each of these sacred buildings is directly linked to the Pope, and all carry the title of “Major” because of their special importance in the Catholic faith.

Visiting the basilicas is not just about religion. They are also living records of Rome’s history, showcasing art and architecture from different periods. From ancient mosaics to Renaissance domes, each basilica has treasures that draw both pilgrims and travellers who are curious about the city’s culture. Exploring them is like walking through centuries of faith, politics, and creativity.

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This blog will take you through all four basilicas, highlighting their history, their unique features, and the experiences that make them worth visiting. Whether you are making a spiritual journey or simply want to discover more of Rome beyond the usual sights, these basilicas offer a fascinating way to connect with the city.

St Peter’s Basilica (San Pietro in Vaticano)

St Peter’s Basilica in Vatican City is the largest church in the world and the heart of Catholic tradition. Built on the site where the Apostle Peter is believed to be buried, it became the centrepiece of the Vatican after centuries of construction. The current basilica was begun in 1506 and completed in 1626, bringing together the work of famous artists and architects, including Bramante, Michelangelo, and Bernini (Vatican.va; Britannica).

One of the most recognisable features is the massive dome designed by Michelangelo, which dominates the skyline of Rome. Visitors can climb to the top for wide views across the city. Inside, the basilica holds masterpieces such as Michelangelo’s Pietà, sculpted when he was just in his twenties, and Bernini’s towering bronze Baldachin over the Papal Altar. Beneath the altar lies the tomb of St Peter, making this one of the most important pilgrimage sites in the world. Outside, Bernini’s St Peter’s Square is designed with sweeping colonnades that symbolise the Church embracing the faithful.

Below is a walking tour of St Peter’s Basilica, to give you an idea of the scale and beauty of the building and its interior:

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St John Lateran (San Giovanni in Laterano)

St John Lateran is the oldest and most important of the four Papal Basilicas. It is not only a major church but also the official cathedral of Rome, which means it holds higher rank than St Peter’s. First built in the 4th century under Emperor Constantine, it has been rebuilt and restored many times after fires and earthquakes. Today, it stands as both a religious and historical landmark, known as the “mother of all churches”.

Inside, the basilica holds the Papal Throne and a main altar that can only be used by the Pope. The doors of the central entrance once belonged to the Roman Senate, linking ancient Rome with Christian history. Next to the basilica is the Lateran Baptistery, the oldest in the Christian world, where many early believers were baptised. Outside, visitors can see the Lateran Obelisk, brought from Egypt in antiquity and recognised as the tallest standing obelisk in the world. Across the street are the Scala Sancta, or Holy Stairs, which tradition says were brought from Jerusalem and are believed to be the steps Jesus climbed before his trial.

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St Mary Major (Santa Maria Maggiore)

St Mary Major is the largest church in Rome dedicated to the Virgin Mary. Built in the 5th century after the Council of Ephesus declared Mary as “Mother of God,” it has remained one of the most important Marian churches in the world. According to tradition, Pope Liberius was inspired to build it after a miraculous snowfall covered the Esquiline Hill in August—a rare event in Rome’s hot summer. The basilica that stands today blends early Christian architecture with later additions from the Baroque period.

Inside, visitors can see some of the oldest Christian mosaics in Rome, which show scenes from the life of Christ and the Virgin Mary. The basilica also preserves a relic said to be from the manger of Jesus, kept in the Crypt of the Nativity. The coffered ceiling was decorated with the first gold brought from the Americas, gifted by the Spanish monarchs Ferdinand and Isabella. Another highlight is the Borghese Chapel, which houses the icon of Salus Populi Romani, a revered image of the Virgin Mary believed to have protected the city through plagues and wars. The basilica’s bell tower is the tallest in Rome, rising above the skyline of the Esquiline Hill.

St Paul Outside the Walls (San Paolo fuori le Mura)

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St Paul Outside the Walls is the second largest basilica in Rome and was built over the burial place of the Apostle Paul. Because Paul’s tomb lay outside the ancient city walls, the basilica was constructed on the Via Ostiense in the 4th century under Emperor Constantine. The original church stood for more than a thousand years before it was badly damaged by fire in 1823. It was later rebuilt with great care, keeping its ancient structure and design, and it remains one of the most impressive sacred spaces in Rome.

The basilica welcomes visitors with a wide courtyard and a striking statue of St Paul holding a sword, a symbol of his teachings. Inside, the vast nave is lined with eighty columns and decorated with mosaics showing all the Popes through history. One of the most peaceful areas is the cloister, an example of medieval Romanesque art, with finely decorated columns. Beneath the high altar lies the tomb of St Paul, which can be seen from the confession area. The mix of ancient heritage and careful restoration makes this basilica a powerful reminder of Paul’s role in shaping early Christianity.

Why Visit All Four?

Visiting the four Major Papal Basilicas is more than just a religious journey. Each church represents a different part of Rome’s long story, from the early Christian era to the Renaissance and beyond. Together, they show how faith, art, and history are connected. For pilgrims, there is a tradition of visiting all four basilicas as an act of devotion. For travellers, it is a way to see Rome through a wider lens, beyond the usual monuments and squares.

The basilicas also display different styles and treasures that reflect the changing times in which they were built. From the ancient mosaics of St Mary Major to the Renaissance dome of St Peter’s, and from the medieval cloister at St Paul’s to the historic throne of St John Lateran, each one offers a unique experience. Visiting all four in one trip gives a fuller picture of Rome as both a spiritual centre and a cultural capital.

Practical Tips for Visitors

• Location & Transport: The four basilicas are spread across Rome. St Peter’s is in Vatican City, while the others are in different parts of the city. They can be reached by metro, bus, or even on foot if you plan carefully. St John Lateran is near San Giovanni metro stop, St Mary Major is close to Termini Station, and St Paul Outside the Walls is accessible from Basilica San Paolo metro stop.
• Entry Fees: Entry to all four basilicas is free. Some areas, such as climbing the dome at St Peter’s or visiting museum sections, require a ticket.
• Dress Code: As with all major churches in Rome, visitors must dress modestly—shoulders and knees should be covered.
• Best Times to Visit: Early mornings and weekdays are usually quieter. Sundays and religious holidays can be crowded, especially at St Peter’s.
• Tours & Pilgrimages: It is possible to visit all four basilicas in one day, either on your own with a map or as part of a guided pilgrimage tour. Some tours also include other key sites such as the Holy Stairs and the Catacombs.

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