Hosios Loukas: A Byzantine Monastery built around a Saint’s tomb

On 7 February 953, a hermit named Luke died in his cell on the western slopes of Mount Helicon, near the ruins of ancient Steiris, and his disciples buried him under its floor. He was not the Evangelist but a local holy man, known in his lifetime as a healer and a prophet. Within sixty years his tomb had drawn so many pilgrims that the community built around it two churches side by side, a crypt, and one of the most lavish interiors of the Byzantine world: coloured marble on the walls and floors, and mosaics on gold ground in the vaults. The Monastery of Hosios Loukas, “the Blessed Luke”, is today the largest and best preserved monastic foundation of the 11th century in Greece, and the oldest of the three monasteries, with Daphni and Nea Moni, that UNESCO listed together in 1990. Almost everything in it, from the joined plan of its churches to the choice of saints on its walls, can be traced back to one purpose: to house and honour that tomb.

Origins: a holy man and his tomb

Luke of Steiris

Luke owed his fame to two gifts. He was a healer, and he was a prophet. His best-known prophecy announced the reconquest of Crete from the Arabs about twenty years before Nikephoros Phokas achieved it in 961, in the reign of Romanos II. That prophecy would later tie the monastery, in local tradition, to the emperors themselves. His full story, including the miracles recorded in his Life, is told in our article on Saint Luke of Steiris.

From a cell to a pilgrimage centre

Luke’s reputation reached the governors of the theme of Hellas, whose seat was at Thebes. The Life names two military governors who honoured him, Pothos (perhaps of the Argyros family) and Krenites (perhaps Arotras). Krenites paid for a church dedicated to St Barbara, begun while Luke was still alive and completed by the monks a few years after his death – likely between 946 and 955.

The tomb soon became the centre of the community. Six months after the burial, a pilgrim monk, Kosmas from Paphlagonia, covered the grave with stone slabs and surrounded it with a barrier. By 955, according to the Life, the monks had turned the cell and its tomb into “a sacred oratory in the shape of a cross”. Healing miracles at the tomb drew pilgrims from all over Greece. They sought cures from the oil of the lamp above the grave, from the moisture it was said to exude, and from dreams received while sleeping beside it.

Where are the first buildings today?

The Life mentions two early buildings, the church of St Barbara and the cruciform oratory over the tomb, but none of the surviving structures can be matched to them with certainty. Eustathios Stikas identified the Panagia with St Barbara, which would date it around 955, and the present crypt with the oratory. Others reversed the pairing: the crypt, where St Barbara is still venerated, would be her church, and the Panagia would be the oratory, perhaps with a contribution from Romanos II (Laskarina Boura). Paul Mylonas placed the oratory in an earlier building under the nave of the Katholikon. Charalambos Bouras rejected both crypt and nave solutions, because the Katholikon and its crypt were built in one campaign to a single design. The question remains open.

Two churches and one tomb

The Church of the Panagia

A broad narthex, or lite, is attached to the west end, and beyond it stood an unusual outer narthex: an open portico with enclosed rooms, probably chapels, at both ends. The southern room was later absorbed into the Katholikon, where it became the north arm of the cross. Little of the church’s painted decoration survives. Five frontal hierarchs in the south arm and on the arch of the sanctuary date from the end of the 12th century, before the Latin conquest of 1204, and recall the painting of the chapel of the Virgin in the monastery of St John on Patmos.

The Katholikon, an octagon on squinches

The main church was built in the first decades of the 11th century for a single purpose: to receive the saint’s relics. That function shaped both its plan, modelled on the martyria of early Christianity, and its decoration. Its ample square nave carries a gallery above and a crypt below. The dome, 8.98 m in diameter and about 5.22 m high, rests on a low sixteen-sided drum, carried by four large arches through four squinches, the corner niches that turn the square into an octagon. This plan, called the Greek-cross octagon, recurs in the most important 11th-century churches of Greece: the Soteira Lykodemou in Athens, Daphni, the church of Christianou in Triphylia, and in a modified form Nea Moni on Chios. Hosios Loukas is much larger than all of them and is generally seen as their model on the mainland.

Inside, side chapels, cross arms and nave open into one another through wide arches on marble columns and triple arcades. Coloured marble revetment covers the lower walls, mosaics on gold ground fill the vaults and conchs above, and an inscription names the monk Gregorios as the man responsible for the marble work. The effect is of a single space dissolving into light, in sharp contrast with the massive cube of the exterior.

The tomb, the shrine and the pilgrims

The architecture becomes clear once you follow the relics. The saint’s original tomb lies in the crypt, against the north wall. Directly above it, on the ground floor of the Katholikon, his marble shrine stands at the junction of the north arm of the cross and the north-east chamber, precisely where the Katholikon meets the older Panagia. Doors linked this chamber to the Panagia’s narthex, so that pilgrims could walk round the shrine and leave through the other church without crossing the nave. The small chapel beside it, now dedicated to St Charalambos, probably served for incubation, the practice of sleeping near the relics while waiting for a cure. The custom was still alive in the 1670s, when the travellers Jacob Spon and George Wheler described it.

Emperors or abbots? Who built the Katholikon

The monastery’s archives are lost, and no document from the time of the foundation survives. Into this gap stepped imperial legends. In 1436 Cyriac of Ancona recorded that Constantine IX Monomachos (1042–1055) had built the monastery. Two centuries later, the monks told Spon and Wheler that the founder was Romanos II, grateful for the Crete prophecy, and that he and his wife Theophano lay in the tombs of the crypt. Already in the 1870s the historian Georgios Kremos doubted these stories, which rest on no earlier source.

The texts of the monastery itself tell a different story. The liturgical service for the translation of the relics, still celebrated every 3 May, records that the relics were moved to the new church on 3 May of either 1011 or 1022, on the initiative of the abbot Philotheos. The Katholikon must have been finished by then. Philotheos is otherwise unknown, but his face appears several times on the walls. In the north-east chamber, next to the shrine, a fresco shows him offering a model of the church to the saint, and in the crypt the same elderly figure with a receding hairline and a forked white beard is named by inscription. Two further clues support the earlier date. A mosaic of St Nikon Metanoeite, who died in 997, gives a lower limit. And the carved marble closely resembles that of the monastery’s dependency at Aliveri on Euboea, dated by inscription to 1014, which led Bouras to favour a date around 1011.

The decoration at a glance

The mosaics of the Katholikon

The mosaics are largely intact, except in the dome, which collapsed before 1593; the present painted Pantocrator probably repeats the lost composition. The programme follows the system developed in Constantinople after Iconoclasm, but bent to the needs of a martyrium. Feast scenes are few and placed where they count: the Nativity, the Presentation and the Baptism in three of the squinches (the Annunciation in the fourth is lost), the Crucifixion and the Anastasis flanking the door from the narthex, the Washing of the Feet and Doubting Thomas at its ends. Around them stand about 171 individual saints, a gallery of monks, bishops, martyrs and soldiers as rich as the illustrated menologia of the period. In the north arm, beside the shrine, Luke himself raises his hands in prayer, facing St Panteleimon, the healer saint who introduces the newcomer among the established saints. Chatzidakis places the mosaics between 1011 and about 1040, or slightly later if the translation took place in 1022. Their linear style, enormous eyes and stocky figures belong to artists trained in Constantinople, with the closest parallel in St Sophia in Kiev. They earned their place in the most beautiful surviving Byzantine mosaics and are the subject, scene by scene of our future guide to the mosaics of Hosios Loukas.

The crypt and its frescoes

Chapels, galleries and later layers

Fresco, cheaper than mosaic, completed the decoration in the side chapels of the Katholikon. The north-west chapel, a funerary space with a tomb cut into its floor, holds a Transfiguration, a Crucifixion and the Ascension of Elijah in his fiery chariot. Later in the 11th century, paintings were added in the gallery and on the blind arcades of the façade, and some areas were repainted. Further work followed in the 12th century, and the Panagia received its frescoes at its end. Under Ottoman rule the monks repainted the rebuilt dome, probably in the 17th century, and added to the painted programme of the Katholikon as late as 1820. Reading the walls means separating these layers: the mosaics and the chapel and crypt frescoes belong to the first half of the 11th century, the dome painting does not.

The monastery beyond the churches

The churches stand at the centre of a larger complex. The monastery was originally fortified, though little of its enclosure wall survives. Its refectory dates from the 11th century; restored by the Archaeological Service, it has housed a collection of Byzantine sculpture since 1993. The bell tower contains a small domed octagon on two levels, built in the 11th century over an underground fountain fed by a cistern and once decorated with frescoes. Cells and service buildings surround the courtyard. In the 12th century an outer narthex was added to the Katholikon; the monks pulled it down during repairs in 1889–1890.

The monastery’s reach extended far beyond its walls. By 1014 it owned two dependencies on Euboea, at Aliveri and Politika, and it soon built another domed octagon for its dependency at Antikyra on the coast. In the 13th century, its dependency at Kambia in Boeotia received a small copy of the Katholikon, complete with a half-buried crypt. Luke’s portrait travelled even further: he appears in the Exultet Roll of Bari in the 11th century, and in 12th-century paintings in St Demetrios at Thessaloniki and at Koutsovendis in Cyprus.

IMAGE PLACEHOLDERThe monastery courtyard with the refectory or bell tower (Wikimedia Commons — check licence).

After 1204: Latin canons, Ottoman rule and 1821

After the Fourth Crusade, central Greece fell under Latin rule. In 1206 the papal legate Benedict of Porto gave Hosios Loukas to the canons of the Holy Sepulchre, and Latin clergy occupied the monastery. When the Ottomans conquered the region, the monastery returned to Greek monks, who repaired and extended it over the following centuries. Their most important works were the rebuilding of the dome, which had collapsed before 1593, and the addition of a storey to the chapel that became the bell tower.

The saint’s body had its own history. According to the monastery, the relics stayed in the Katholikon until around 1460. From 1463 they were kept in the church of San Giobbe in Venice, venerated there as relics of Luke the Evangelist. They were identified as those of Luke of Steiris and returned to the monastery on 13 December 1986.

The monastery took part in the War of Independence, and Ottoman forces caused serious damage there in 1823. It was damaged again, and looted, during the Second World War, including bombing in 1943.

Restoration and recognition

Scholarly interest started early. The studies of Georgios Kremos (1874–1880), Charles Diehl (1889) and Robert Weir Schultz and Sidney Barnsley (1901) gave Hosios Loukas a central place in the study of Byzantine art. The Archaeological Service began a long programme of conservation in 1938. Anastasios Orlandos and Eustathios Stikas restored the refectory and other buildings, and Photis Zachariou cleaned and conserved the mosaics and frescoes. It was during this work that the Joshua painting came to light in 1964. In 1990, UNESCO inscribed the monastery on the World Heritage List together with Daphni and Nea Moni, as masterpieces of the same moment in Byzantine art.

The most recent threat came from wildfire. On 23 August 2023, a fire reached the monastery, burned part of its courtyard and badly damaged one of the buildings of the south-east wing; the churches were spared. In 2026 the Region of Central Greece announced €2.4 million for the restoration of that wing.

Visiting Hosios Loukas today

The monastery lies about two hours’ drive from Athens and can be combined with Delphi in a day. It is both a working monastery and an cultural site: the two churches, the crypt and the refectory are visited with one ticket. Shoulders and knees should be covered.

A sensible route follows the logic of the building. Start outside the east end of the Panagia, to see the cloisonné masonry and the pseudo-Kufic brick friezes. Enter the Katholikon through its narthex, where the Crucifixion and the Anastasis greet you on either side of the door, then stand under the dome to take in the squinches and the marble. Look for Luke and Panteleimon facing each other in the two arms of the cross, and the shrine at the north-east corner. Finish in the crypt, through its entrance on the south side, and in the refectory with its sculpture.

What you will not see needs to be known in advance. The dome mosaic is lost and the Pantocrator above you is a later painting. The Joshua fresco that settled the chronology lies in a part of the wall once covered by marble. And the two buildings that stood over the first tomb, the cruciform oratory and the church of St Barbara, cannot be pointed to on the ground at all.

Hosios Loukas belongs with the two other monasteries of the same UNESCO listing. Daphni, on the edge of Athens, has the more classical mosaics; our Byzantine Athens visitor guide places it on a route with the churches of the city.

Daphni impresses by its mosaics, Nea Moni by its imperial pedigree. Hosios Loukas tells a different story: a provincial holy man, a community that grew around his grave, and abbots from the Theban nobility who turned a tomb into one of the great interiors of Byzantium. It is the oldest and largest of the three, and the only one whose every wall still points back to the man buried below it.

Frequently asked questions

Sources and further reading

• Chatzidakis, Nano. Hosios Loukas (Byzantine Art in Greece: Mosaics, Wall Paintings), Melissa, Athens, 1997.
• Oikonomides, Nicolas. “The First Century of the Monastery of Hosios Loukas”, Dumbarton Oaks Papers 46, 1992, pp. 245–255.
• Connor, Carolyn L. Art and Miracles in Medieval Byzantium: The Crypt at Hosios Loukas and Its Frescoes, Princeton University Press, 1991.
• Connor, Carolyn L., and W. Robert Connor. The Life and Miracles of Saint Luke of Steiris: Text, Translation and Commentary, Hellenic College Press, Brookline, 1994.
• Chatzidakis, Manolis. Studies on the dating of the Katholikon, 1969 and 1972. ⚠ CHECK full references
• Stikas, Eustathios. Το οικοδομικόν χρονικόν της Μονής Οσίου Λουκά Φωκίδος, Athens, 1970. ⚠ CHECK title
• Bouras, Charalambos. Study of the architecture of Hosios Loukas, 1994, and The Architecture of the Monastery of Hosios Loukas (posthumous). ⚠ CHECK both references
• Demus, Otto. Byzantine Mosaic Decoration: Aspects of Monumental Art in Byzantium, London, 1948.
• Van Tricht, Filip. The Latin Renovatio of Byzantium: The Empire of Constantinople (1204–1228), Brill, 2011, p. 450.
• UNESCO World Heritage Centre, “Monasteries of Daphni, Hosios Loukas and Nea Moni of Chios”, whc.unesco.org/en/list/537.

Cover image credits: @ bradhostetler, CC BY-SA 2.0