Thessaloniki carries more than twenty-three centuries of history in its streets, from a Macedonian foundation named for a princess to a modern Greek metropolis on the Thermaic Gulf. The city has served as a Roman provincial capital, an imperial seat under Galerius, the second city of Byzantium, an Ottoman port, and the largest Sephardic Jewish community in the world. Each age left a monument that still stands, so a walk through the centre reads as a walk through time. Trace that long record, era by era and stone by stone, with My Greece Tours.
The story runs in clear stages, each anchored to a building a visitor can reach on foot. The sections below cover the Macedonian foundation, the Roman city on the Via Egnatia, the imperial quarter of Galerius, the Byzantine second city, the Ottoman and Jewish centuries, the great fire and its rebuilding, and the Holocaust that ended a Jewish presence of four and a half centuries. The later parts turn to the modern city and how to read its layers on the guided Thessaloniki tours.
Who founded Thessaloniki and what does its name mean?
Thessaloniki was founded around three hundred and fifteen BC by King Cassander of Macedon, who merged Therma and twenty-six nearby settlements into one city. He named it after his wife Thessalonike, a half-sister of Alexander the Great.
Cassander ruled Macedon after the death of Alexander the Great, when the general’s empire split among his rival successors. He married Thessalonike, a daughter of King Philip the Second, to tie his rule to the royal line of the Argead dynasty. The princess had been named to mark an earlier Macedonian victory over the Thessalians, so her name joined the words for Thessaly and victory. Cassander gave that name to his new foundation on the gulf, and it has held without a break to the present day.
The new city rose on the shore of the Thermaic Gulf, on and around the older town of Therma that gave the gulf its name. Cassander gathered the people of twenty-six small settlements into a single walled city, a common act of Macedonian kings who built strength through concentration. The site commanded a natural harbour and the land routes that ran inland toward the Balkans. That position set the course of the city’s whole history, since trade and armies alike passed through the gulf.
The finds from these first centuries fill the halls of the Thessaloniki Archaeological Museum, from gold wreaths to the carved grave stelae of the Macedonian dead. The early city minted its own coins and grew as a Hellenistic port under the later kings of Macedon. Little of the classical town stands above ground, since the Roman and later cities built over it. The record of the foundation survives instead in the museum cases and in the name the city still carries.
What was Roman Thessaloniki like?
Thessaloniki became Roman after the Battle of Pydna in one hundred and sixty-eight BC and served as capital of the province of Macedonia. Its place on the Via Egnatia made it a trade hub between the Adriatic and Constantinople.
Rome defeated the last Macedonian king at Pydna and broke the kingdom into republics, then formed the province of Macedonia in the middle of the second century BC. Thessaloniki became the seat of the Roman governor and the chief city of the province. Its people kept a measure of self-rule as a free city under the empire, which spared them a garrison and eased their taxes. The Roman peace let the port grow rich on the goods that crossed between east and west.
The Via Egnatia ran through the heart of the city, the great Roman road that linked the Adriatic ports to Byzantium on the Bosphorus. That road carried legions, traders, and later apostles across the Balkans, and Thessaloniki sat at its midpoint on the sea. The line of the ancient road survives as Egnatia street, the main avenue of the modern centre. Merchants from across the empire settled along it, which made the city a meeting point of peoples and faiths.
The civic heart of the Roman city lay at the Roman Forum, a paved square ringed by colonnades, shops, and an odeon for public performance. Excavators uncovered its two terraces below the modern street level, and the site now opens as an archaeological park in the centre. The forum held the courts, the market, and the assembly of the Roman town. Its ruins let a visitor stand on the stones where the governor’s city did its daily business.
The apostle Paul reached Thessaloniki on his second journey and preached in the synagogue of the city’s Jewish community. He founded one of the earliest Christian congregations in Europe and later wrote two letters to it, the Epistles to the Thessalonians in the Christian scripture. Those letters count among the oldest books of the New Testament. The city thus entered Christian history early, a root that would flower in its later age as a centre of the faith.
How did the emperor Galerius shape the imperial city?
The emperor Galerius made Thessaloniki his eastern capital around the year three hundred, building a palace quarter across the south of the city. His arch and the Rotunda still mark the imperial axis he laid out.
Galerius ruled as one of the four emperors of the tetrarchy, the system that split the Roman world among two senior and two junior rulers. He chose Thessaloniki as the seat of his power in the east, close to the Danube frontier he defended. His builders raised a district of palaces, a hippodrome, and ceremonial halls on the low ground toward the sea. The city rose for a generation to the rank of an imperial capital, one of the great courts of the divided empire.
The Arch of Galerius spanned the Via Egnatia to celebrate the emperor’s victory over the Persians of the Sassanid empire. Its marble piers carry carved panels that show the battles, the sacrifices, and the four rulers of the tetrarchy in ceremony. Part of the arch still stands over the pedestrian street that follows the old imperial road. It counts among the finest Roman triumphal monuments to survive in the eastern Mediterranean.
A short walk north of the arch stands the Rotunda, a colossal round hall of brick that Galerius raised as part of the same complex. Scholars debate whether he meant it for his tomb or for the worship of the Roman gods, though he was buried far to the north. The building later became a church and then an Ottoman mosque, and it keeps early Christian mosaics of gold glass under its dome. It ranks as the oldest monument still standing in the city.
The palace itself spread south of the arch toward the seafront, and its excavated remains include an octagonal throne room paved in marble. The whole quarter followed the model of the tetrarchic capitals that the four rulers built across the empire. Galerius died of illness and never saw his eastern capital reach its full height, yet his monuments fixed the ceremonial map of the Roman city. The line of his processional axis still shapes the streets that climb from Egnatia toward the Rotunda.
Why was Thessaloniki the second city of Byzantium?
Thessaloniki grew into the second city of the Byzantine Empire once Constantinople became the capital. Its wealth funded churches whose mosaics survive, and Saint Demetrius became its patron and the focus of a great basilica.
Constantine moved the empire’s capital to Constantinople on the Bosphorus, and Thessaloniki settled into the rank of the second city of the Byzantine east. Its walls, harbour, and position on the land route to the capital made it the anchor of the empire in Europe. The city withstood repeated sieges by Slavs, Avars, and Bulgars across the early medieval centuries. Saracen pirates from Crete broke through once and carried thousands into slavery, a blow the city recorded in a survivor’s account.
The patron of the city was Saint Demetrius, a Roman soldier martyred in the persecution under Galerius. The great church of Agios Dimitrios rose over the site of his tomb and grew into the largest basilica in Greece. Its surviving mosaic panels show the saint with the bishops and officials who rebuilt the church after an early fire. Pilgrims came for the myron, a fragrant oil said to flow from the tomb, which drew the faithful from across the Orthodox world.
The Byzantine churches of Thessaloniki carry a record of church art across a thousand years, from the domed Hagia Sophia to the frescoed Holy Apostles. Their mosaics and wall paintings trace the changing styles of the empire, and UNESCO inscribed the group on the World Heritage List for that value. The city served as a workshop of Byzantine art whose influence spread north into the Slavic lands. The monks Cyril and Methodius, born in the city, carried its learning and a new alphabet to the Slavs.
The finest of the movable Byzantine art now fills the Museum of Byzantine Culture, from icons and coins to carved marble and grave goods. The empire’s hold on the city loosened in the later medieval centuries under pressure from Normans, Crusaders, and Serbs. Crusaders seized the city after the sack of Constantinople and held it as a short-lived Latin kingdom. Thessaloniki returned to Byzantine rule, yet the empire that owned it was fading toward its end.
What happened under Ottoman rule and the Sephardic Jewish city?
The Ottomans took Thessaloniki in fourteen thirty and held it for nearly five centuries. Sephardic Jews expelled from Spain settled in numbers that made the city the largest Jewish community in the world, known as the Mother of Israel.
Ottoman forces under Sultan Murad the Second stormed Thessaloniki after a siege, ending a brief spell of Venetian control. The conquerors turned the great churches into mosques, added minarets and fountains, and built bathhouses and covered markets through the lower town. The White Tower on the seafront rose in this age as part of the city’s defences and later served as a prison. The Ottoman city grew as a port and a provincial capital of the empire in Europe.
Sephardic Jews expelled from Spain by the decree of fourteen ninety-two found refuge in the Ottoman city, which welcomed their trade and their skills. Their numbers grew until the community counted more than half the city’s people, a share found in no other city on earth. Thessaloniki became the only city of its size with a Jewish majority, a place the Jews called the Mother of Israel. The port even fell quiet on the Jewish sabbath, when the docks and markets closed.
The Jews of the city spoke Ladino, a form of Spanish carried from Iberia and kept alive for four centuries in the streets of the port. They ran the harbour, the textile trades, and the printing presses, and their scholars made the city a centre of Jewish learning. The community built dozens of synagogues, each tied to a town or a trade of the old country. That world set Thessaloniki apart from every other city of the empire, a Sephardic capital on the Aegean.
The Ottoman fabric of the city survives best in Ano Poli, the Upper Town, which climbs to the Byzantine walls above the modern centre. Its lanes kept their timber houses, their fountains, and their hammams through the fire that later razed the lower city. The founder of the Turkish republic, Mustafa Kemal Atatürk, was born in one of those houses, now a museum. The upper town preserves the look of the Ottoman port that the fire and the modern plan erased below.
How did the great fire and the Hébrard plan remake the city?
A great fire in nineteen-seventeen destroyed the old lower town and left more than seventy thousand people homeless. The architect Ernest Hébrard redrew the centre on a European grid, which gave the city Aristotelous Square and its modern face.
The Greek army entered Thessaloniki in nineteen-twelve during the First Balkan War, and the Treaty of Bucharest joined the city to Greece the following year. Four centuries of Ottoman rule ended, and the port became the second city of the Greek state. The First World War then turned the city into a base for the Allied armies of the Macedonian front. The pressures of that war and the crowded old town set the stage for the disaster that followed.
A fire broke out in the crowded lower town in the late summer of nineteen-seventeen and swept through the timber houses for days. It burned the heart of the old city, thirty-two synagogues, churches, and mosques among the loss, and left more than seventy thousand people without homes. The Jewish community suffered the heaviest blow, since the fire struck the quarters where most of them lived. The government barred a hasty rebuild and called instead for a planned new centre.
The French architect Ernest Hébrard drew a new plan for the burnt centre, a grid of broad avenues and public squares in place of the tangled lanes. His design opened a monumental axis from the sea to the upper town and framed it with buildings in a Byzantine-inspired style. The centrepiece was Aristotelous Square, a grand plaza that opens to the waterfront and gathers the life of the modern city. The plan gave Thessaloniki the European face it wears in the present.
The exchange of populations that followed the war with Turkey remade the people of the city within a decade. More than a hundred thousand Orthodox refugees from Anatolia and the Pontus settled in Thessaloniki, while the city’s Muslims left for Turkey. The newcomers filled new quarters around the centre and shifted the balance of the population toward a Greek majority. The Sephardic Jews remained the largest single community, yet the city that emerged was overwhelmingly Greek.
What happened to the Jewish community in the Holocaust, and how did the modern city grow?
German forces occupied Thessaloniki in the Second World War and deported almost the whole Jewish community to Auschwitz-Birkenau in nineteen forty-three. The ancient Jewish cemetery was destroyed, and almost none of the deported survived.
German troops occupied the city for the length of the Second World War, and the occupation fell hardest on the Jews of Thessaloniki. The authorities confined the community to ghettos, then deported the population in a series of trains to the death camp of Auschwitz-Birkenau in occupied Poland. More than forty-three thousand people, over nine in ten of the community, were murdered there. A Sephardic world of four and a half centuries was destroyed within months.
The occupiers also destroyed the vast Jewish cemetery east of the centre, one of the largest in Europe, and its ground later held the new university. Broken gravestones were reused across the city, and the loss erased a physical record of the community’s centuries. The Jewish Museum of Thessaloniki now keeps the memory of that world through documents, photographs, and salvaged stones. A monument on the main square marks the Holocaust that emptied the city of its Sephardic people.
The city recovered after the war and grew into the industrial and cultural capital of northern Greece. Its port serves the Balkans and the wider region, and its university ranks among the largest in the country. An international trade fair and a film festival mark the calendar and draw crowds from abroad. UNESCO inscribed the early Christian and Byzantine monuments on the World Heritage List, which fixed the city’s ancient core in the record of world heritage.
The modern centre lets a visitor read every era within a compact walk between the sea and the upper walls. A route can open at the White Tower, cross the Roman Forum, and climb to the Rotunda and the arch before it ends among the Byzantine churches. The essential stops fill most guides to things to do in Thessaloniki for the depth of history behind each one. A planned Thessaloniki itinerary strings the monuments into the order in which the city rose.
Frequently Asked Questions
Who founded Thessaloniki?
King Cassander of Macedon founded Thessaloniki around three hundred and fifteen BC, gathering the people of Therma and twenty-six nearby settlements into one walled city on the Thermaic Gulf. He named it after his wife Thessalonike, a daughter of King Philip the Second and a half-sister of Alexander the Great, whose name the city has carried without a break ever since.
How old is Thessaloniki?
Thessaloniki has stood for more than twenty-three centuries, since its foundation around three hundred and fifteen BC. That long life makes it one of the oldest continuously inhabited cities in Europe. It has passed through Macedonian, Roman, Byzantine, Ottoman, and modern Greek rule in turn, and each age left monuments that survive in the streets of the centre today.
Why was Thessaloniki important in the Roman Empire?
Thessaloniki served as capital of the Roman province of Macedonia and sat at the midpoint of the Via Egnatia, the road that joined the Adriatic to Constantinople. The emperor Galerius later made it his eastern capital and built a palace quarter there. The apostle Paul preached in the city and wrote the Epistles to the Thessalonians to its early Christian congregation.
Why is Thessaloniki called the Mother of Israel?
Thessaloniki earned the name Mother of Israel because Sephardic Jews expelled from Spain settled there in such numbers that they formed the majority of the population. For four centuries under Ottoman rule it held the largest Jewish community in the world, a Ladino-speaking city of scholars, merchants, and printers whose harbour fell quiet on the Jewish sabbath.
What happened to Thessaloniki in the great fire?
A fire in nineteen-seventeen swept through the crowded timber lower town and destroyed its historic centre, leaving more than seventy thousand people homeless. The French architect Ernest Hébrard then redrew the burnt district on a European grid of broad avenues and squares. That plan created Aristotelous Square and gave Thessaloniki the modern face its centre wears today.
What happened to the Jews of Thessaloniki in the Second World War?
During the German occupation the city’s Jewish community was confined to ghettos and then deported to the Auschwitz-Birkenau death camp in nineteen forty-three. More than forty-three thousand people, over nine in ten of the community, were murdered, and the ancient Jewish cemetery was destroyed. The Jewish Museum of Thessaloniki now preserves the memory of that lost Sephardic world.