Sanctuary of Turin and the Holy Shroud

Saint John the Baptist Cathedral

The sanctuary of the Shroud is not an isolated basilica: it is the metropolitan cathedral of Turin, dedicated to Saint John the Baptist, patron of the city. It stands on Piazza San Giovanni, in the historic heart of Turin, on the site of an ancient Roman theatre and of three medieval churches — Saint Saviour, Saint Mary of Dompno and Saint John — which it replaced.^[2] It is the only major church in Renaissance style in the Piedmontese city, having kept its white marble façade while the rest of Turin was covered in Baroque.^[3]

The building was confirmed in its rank as metropolitan cathedral by Pope Leo X in 1515.^[4] Its three-portal façade, sober and bright, contrasts with the dark mass towering above it: the dome of the Shroud chapel, grafted onto the rear of the choir. The visitor entering the nave therefore does not see the relic at once; he first discovers an orderly Renaissance church, before being drawn, beyond the high altar, toward the dark shrine where the Shroud long rested.

A monumental complex: cathedral, campanile and Royal Palace

To the left of the façade stands the campanile, whose body dates back to 1470, earlier than the cathedral itself and preserved during its rebuilding.^[5] But the most singular feature of the place is its continuity with the Royal Palace (Palazzo Reale): the Shroud chapel was designed to open both onto the cathedral choir and onto the ducal apartments, so that the House of Savoy could come to pray before its relic without leaving home.^[6] The Turin sanctuary was thus, from the outset, a twofold place: the people's church and the prince's palace chapel.

This interlocking explains why the Shroud, in Turin, was never one relic among others: it was the dynastic palladium, the sacred treasure the Savoys associated with their own legitimacy, housed at the exact point where their temporal authority and their devotion met.

Meo del Caprino and the late-15th-century building site

The present cathedral is the work of a Tuscan architect, Amedeo di Francesco da Settignano, known as Meo del Caprino (or Meo del Caprina). The building site, commissioned by Cardinal Domenico della Rovere, proceeded at a remarkable pace: begun in 1491, the church was completed in seven years, around 1498.^[7] For a cathedral, this speed is exceptional and gives the building a rare unity of style: the great Gothic cathedrals had been built over centuries, mixing periods; the Duomo of Turin bears the coherent imprint of a single generation of builders.

The church follows a sober, luminous Latin-cross plan with three naves, ordered according to the principles of the Florentine Renaissance imported to Turin. Nothing in this vessel of light stone yet foretold that it would become the reliquary of a cloth brought from France nearly a century later. The cathedral was first what it was meant to be: the archbishop's seat, the liturgical centre of a capital in the making.

A church that became necropolis and sanctuary

From the mid-16th century onward, the cathedral also became the necropolis of the House of Savoy, binding the fate of the building still more closely to that of the dynasty.^[8] It was into this church, already laden with dynastic meaning, that the Shroud was brought in 1578 — not as a passing guest, but as the sacred heart toward which all the architecture would soon converge. The grafting of Guarini's chapel, a century later, would only inscribe in stone what events had already decided: Turin would henceforth be the city of the Shroud.

The vow of Saint Charles Borromeo and Emmanuel Philibert's ruse

The Shroud had belonged to the House of Savoy since 1453; it was kept at Chambéry, then capital of the duchy, in the Sainte-Chapelle of the castle.^[9] The occasion for its transfer to Turin came from one man: Saint Charles Borromeo, Archbishop of Milan, who had vowed to travel on foot to Chambéry to thank God for having spared his city from the plague of 1576.^[10]

Duke Emmanuel Philibert seized the pretext. On the pretense of sparing the prelate, of fragile health, the strain of crossing the Alps, he had the relic brought forward to meet him, as far as his new capital, Turin. In reality, the calculation was political: the duke intended to fix the Shroud at Turin permanently, without too much offending his Chambéry subjects deprived of their treasure.^[11]

"It is the shield of the country, it is our great relic." — Saint Francis de Sales, on the Savoy Holy Shroud^[12]

The carrying over the Alps and the first Turin exposition

In 1578, the Shroud was carried on men's backs over the Great St Bernard Pass and through the Aosta Valley, where a few isolated chapels still preserve its memory. Escorted by all the clergy in sumptuous vestments, it entered Turin to the thunder of arquebuses, was first laid in the old San Lorenzo chapel, then displayed in the cathedral on a table covered with silk.^[13] It was there that Charles Borromeo, with his twelve travelling companions, venerated it on his knees for a whole hour.

To meet the influx of pilgrims — forty thousand, it is said — an exposition was improvised on Piazza del Castello, before the present Palazzo Madama: the relic was carried under a canopy, protected by cavalry, to a richly decorated wooden platform.^[14] On returning from this visit, a member of Borromeo's retinue, Augusto Cusano, the future cardinal, recorded his wonder:

"It is an incredible thing to see how this Most Holy Cloth [...] proves to be whole and intact after 1,500 years. But it is even more astonishing to see imprinted upon it the image and likeness of the true and natural body of the Lord [...] not by the human work of a painter [...], but miraculously imprinted by His own body." — Augusto Cusano, account of the 1578 Turin exposition^[15]

Four years later, at a further exposition, the Archbishop of Bologna Alfonso Paleotti felt the same amazement and published, in 1598, the first scholarly book devoted to the relic, the Esplicatione del Sacro Lenzuolo, blending anatomical observations with exegetical reflections.^[16] The Turin sanctuary entered the history of European letters and devotion.

A Dome That Defies the Laws of Architecture

For almost a century, the Shroud was kept in Turin without a permanent home. The project for a monumental chapel, considered from the moment of the transfer, was first entrusted to Bernardino Quadri and Amedeo di Castellamonte, then taken up in 1667 by a singular genius: Camillo Guarino Guarini (1624–1683), at once a Theatine monk, mathematician, philosopher and architect.^[17] Work on the Cappella della Sacra Sindone unfolded from 1668 to 1694.^[18]

Guarini designed a round chapel of black marble, reached by two marble staircases from the side aisles of the cathedral. But it is its dome that makes it a masterpiece of Piedmontese Baroque: not a classical hemisphere, but an extraordinary interlacing of arches of decreasing size, stacked in staggered rows, pierced by a multitude of openings invisible from below.

"Guarini covered the chapel with a dizzying dome, resting on three arches and not four as is the rule for all the domes in the world. [...] between [these arches] a multitude of openings, invisible from below, let in the light symbolising the Resurrection into this architecture of black marble symbolising death. [...] This dome has become one of the strongest landmarks of the Turin cityscape." — Christian Regat, historian^[19]

The symbolism is clear: the black marble speaks of death and the tomb; the light descending through the tiered arches speaks of the Resurrection. The entire setting is a meditation in stone on the mystery the relic is held to bear — Christ's passage from death to life.

Bertola's Altar and the Link with the Royal Palace

After Guarini's death, it was his successor Antonio Bertola who built the high altar intended to receive the reliquary, at the centre of the chapel.^[20] Later, a Baroque building directly linked the chapel to the Royal Palace, so that the ducal family could come to venerate the relic without appearing in public.^[21] The Shroud was solemnly transferred into the completed chapel in 1694, the cloth having first received further consolidation.^[22]

Blessed Sebastiano Valfrè, Discreet Guardian

Before this transfer, a priest of the Oratory of Turin, Blessed Sebastiano Valfrè, sewed with his own hands a second lining of black cloth over the one the Poor Clares of Chambéry had fitted after the fire of 1532.^[23] This humble gesture — stitching, strengthening, protecting — sums up the long chain of material care bestowed on the relic at Turin: the sanctity of the place was also expressed through the patient work of the needle and the learning of conservators.

The House of Savoy, Owner (1453–1983)

For five centuries, the Shroud was private property: that of the House of Savoy, which had acquired it in 1453 and regarded it as its palladium.^[24] The dukes and then the kings disposed of it, moved it as wars and dynasties dictated, and most often reserved showings for great family occasions — princely weddings, births, anniversaries of reigns. During the siege of Turin by the French in 1706, Victor Amadeus II had it evacuated to Cherasco, Oneglia and then Genoa, before it returned to its chapel.^[25] In the 20th century, the two world wars forced it into exile once more: hidden in 1918 in an underground chamber of the Royal Palace, transferred in secret in 1939 to the isolated abbey of Montevergine in Campania to shield it from bombing and from the designs of Nazi Germany, it did not return to Turin until 1946.^[26]

The Bequest to the Holy See (1983) and the Pontifical Custodian

The decisive turning point came with the last King of Italy in exile. On 27 March 1981, at Geneva, Umberto II of Savoy bequeathed the Shroud to the Holy See. Seven months to the day after his death, on 18 October 1983, Cardinal Agostino Casaroli signed the deed accepting the donation.^[27] The relic, until then a dynastic possession, became the pope's property.

In accordance with the donor's wish, John Paul II decided that the Shroud would remain in Turin and instituted a new office: that of pontifical custodian, conferred ex officio on the Archbishop of Turin.^[28] Since then, successive archbishops have exercised custody of the relic in the pope's name: Cardinal Anastasio Ballestrero, then Cardinals Giovanni Saldarini and Severino Poletto, Archbishop Cesare Nosiglia, and today Cardinal Roberto Repole, Archbishop of Turin since May 2022.^[29]

The Confraternity of the Holy Shroud (1598) and the Museum

Around the relic there also grew up, very early, a lay life of devotion. On 25 May 1598, twenty years after the Shroud's arrival, the Confraternity of the Most Holy Shroud (Confraternita del SS. Sudario) was founded, with the authorisation of Archbishop Carlo Broglia and the approval of Duke Charles Emmanuel I.^[30] Its mission: to spread the cult and devotion of the Shroud, and to teach the Christian meaning of suffering — which also led it to strong charitable involvement, to the point of building and running the first hospital of the Savoyard States.^[31]

It was this same confraternity that founded, in 1936, the Museum of the Shroud (Museo della Sindone), housed since 1998 around the crypt of the church of the Santo Sudario: there are kept Secondo Pia's apparatus, reproductions, old copies and the entire scientific memory of the relic.^[32] The Turin shrine thus overflows the cathedral alone: it forms a network of places — the church, the chapel, the palace, the confraternity church, the museum — all turned towards the same cloth.

From dynastic expositions to worldwide crowds

For a long time, the Shroud was shown only on rare occasions, most often linked to the House of Savoy. In the 19th century, the cult even suffered an eclipse: the relic left its shrine only sporadically.^[33] Pope Pius VII, passing through Turin during his forced journeys under Napoleon, was able to see it three times (1804, 1814, 1815). The Countess de Boigne left a striking account of the exposition of 19 May 1815:

« The pope [...] drew from the box a large piece of coarse stained cloth. He carried it [...] onto the balcony where he unfolded it. The troops knelt, as did the crowd filling the streets [...]. The most solemn silence lasted all the while. » — Countess de Boigne, Mémoires, Turin ostension of 19 May 1815^[34]

The great turning point came in the 20th century. The ostension of 1978, organized for the fourth centenary of the arrival in Turin, attracted 3.3 million pilgrims, with queues of sixteen hours: something never seen before.^[35] The fame of the place had become worldwide.

1898: the cathedral, scene of the first photograph

The most famous event to take place in the cathedral was not an ordinary ostension, but a photography session. From 25 May to 2 June 1898, for the fourth centenary of the cathedral and a princely wedding, the Shroud was exhibited.^[36] The lawyer and amateur photographer Secondo Pia obtained permission to set up his equipment in the chapel and to photograph the relic. While developing his plates, he discovered the inconceivable: the photographic negative revealed a positive image, of stunning realism and relief, invisible to the naked eye.^[37]

From that night on, the sanctuary of Turin changed status: without ceasing to be a place of prayer, it became the laboratory of a worldwide scientific enigma.^[38] The details of this discovery and its aftermath — Enrie's photographs in 1931, the 20th-century examinations — belong to the dossier on the authenticity of the Shroud; what matters here is that the place itself was the scene of the 1898 turning point.

The great modern ostensions

The ostensions of recent decades have made the Duomo one of the greatest pilgrimage gatherings in the Catholic world. The chronology shows their growing scale.

The popes of the 20th and 21st centuries sustained this current of devotion with strong words, spoken in Turin or for Turin. Pius XII, in 1953, hailed Turin as:

« The city keeping as a precious treasure the Holy Shroud which shows, for our emotion and our consolation, the image of the lifeless body and the divine bloodied face of Jesus. » — Pius XII, radio message of 13 September 1953^[45]

And Pope Francis, who came in 2015, summed up the meaning of the sanctuary:

« The Holy Shroud is an icon of this love [...] which once again has drawn so many people here, to Turin. » — Pope Francis, Turin, 21 June 2015^[46]

Attempts at destruction (1972, 1990, 1997)

Keeping so famous a relic has never been without danger. On 1 October 1972, a disturbed individual entered the royal chapel through the palace roof and set fire to it; the reliquary resisted thanks to the layers of asbestos protecting it.^[47] A similar attempt occurred again in 1990, and the Shroud even appeared on al-Qaeda's list of targets.^[48] The place itself, by its very fame, attracts fanaticism as much as pilgrims.

The night of 11–12 April 1997 and firefighter Mario Trematore

The most dramatic ordeal was the fire on the night of 11 to 12 April 1997. At around eleven o'clock in the evening, a fire broke out in Guarini's chapel, then under restoration and cluttered with scaffolding and wooden structures; in places the temperature exceeded a thousand degrees.^[49] The great stained-glass window connecting with the cathedral shattered, air rushed in as into a blast furnace, and the burning scaffolding threatened to collapse onto the shrine — placed, by misfortune, just at that spot behind the high altar, behind several centimetres of bulletproof glass.^[50]

It was then that a firefighter in his forties, Mario Trematore, threw himself into the furnace. Guided, he would say, by an inner voice, he struck the bulletproof glass relentlessly with a sledgehammer until it gave way, and the firefighters managed to extract the reliquary at around one o'clock in the morning.

« Had it been another object, a painting of priceless value [...] by Giotto or Michelangelo, I would not have lifted a finger. » — Mario Trematore, firefighter, on the rescue of the Shroud on the night of 11–12 April 1997^[51]

Two days later, on 14 April, after inspection, Cardinal Saldarini announced that the relic had suffered no damage: at most it had endured heat of about 35 °C.^[52] The preservation of the Shroud in the two great fires of its history — Chambéry in 1532, Turin in 1997 — is experienced by many of the faithful as providential protection; the historian confines himself to noting that, twice, fire did not have the last word.

Restoration of the chapel and the 2018 reopening

Guarini's chapel, seriously damaged, remained closed for more than twenty years. Its long and costly restoration ended with a solemn reopening on 27 September 2018.^[53] Throughout that time, the Shroud was kept elsewhere in the cathedral, in a safe place. The masterpiece of black marble was thus restored to the people of Turin, returned in its Baroque splendour — proof that the sanctuary-building, and not only the relic, receives first-rate heritage care.

The flat reliquary, under inert atmosphere (since 2000)

The 1997 fire hastened a decision already in the making: to radically change the mode of conservation. Rolled up in its old reliquary, the Shroud was developing new creases and its image risked fading through oxidation.^[54] In 2000 a new reliquary was built keeping the cloth flat along its full length, fully airtight, computer-controlled, and filled with an inert argon atmosphere — both to preserve it and to display it.^[55] Today, the Shroud rests horizontally in this case, in the left arm of the cathedral, behind the chapel.

The 2002 restoration

In June and July 2002, ancient-textile specialist Mechthild Flury-Lemberg and her team replaced the old backing cloth with a Holland cloth, removed the patches sewn on after the 1532 fire and cleaned organic residues — carefully catalogued and sealed for future research.^[56] The operation was used to produce a complete digital mapping of the relic.

The multimedia exposition of the 2025 Jubilee

Contrary to a widespread belief, the Shroud is not exhibited at every Jubilee.^[57] For Holy Year 2025, the custodian, Cardinal Repole, chose an unprecedented formula, presented as the "first multimedia exposition in history": from 28 April to 5 May 2025, a tent erected in Piazza Castello (the Avvolti initiative) made it possible to explore the Shroud's image at full scale and in high definition, followed by a digital extension accessible worldwide.^[58] The Turin shrine thus enters the age of the augmented pilgrimage: the relic remains in its case, but its image is now offered to anyone who wishes to "touch" it from a screen.

• The Holy Shroud (or Shroud) of Turin — the case for authenticity: radiocarbon dating, image formation, wounds of the Passion.
• The sanctuary of Manoppello and the sanctuary of Monte Sant'Angelo — other shrine-reliquaries in the same series.
• The sanctuary of Mount Carmel — another major centre of Catholic devotion.
• Why venerate relics? — the Catholic meaning of the veneration of relics.