Audio Guide: Thessaloniki Introduction Walking Tour (Self Guided), Thessaloniki

Thessaloniki has been shaped by layers of empire, trade, and migration for more than two millennia. It was founded in 315 BCE by Cassander, king of Macedon, who merged several smaller settlements around the Thermaic Gulf into a single city. He named it after his wife, Thessalonike, the half-sister of Alexander the Great. The name Thessalonikē combines Thessaloi and nikē, meaning victory, commemorating a Macedonian victory of the Thessalian forces-literally “Victory of the Thessalians”.

Thanks to its strategic coastal position, Thessaloniki quickly grew into a key commercial hub. Under Roman rule, it prospered as a major stop along the Via Egnatia, the great road linking the Adriatic Sea to Byzantium. The city enjoyed a degree of autonomy and became an early center of Christianity; the Apostle Paul addressed two of his New Testament letters to the local Christian community.

During the Byzantine period, Thessaloniki emerged as the empire’s second most important city after Constantinople. It was a fortified stronghold and a major intellectual and religious center, renowned for its churches, mosaics, and theological scholarship. Despite frequent sieges by Slavs, Arabs, Normans, and others, the city remained a vital Byzantine outpost for centuries.

In 1430, Thessaloniki fell to the Ottomans, entering a long new chapter that reshaped its population and culture. The city became notably diverse, especially after the arrival of Sephardic Jews expelled from Spain in 1492, who transformed Thessaloniki into one of the most important Jewish centers in the Mediterranean. Mosques, baths, and markets altered the urban fabric, while trade kept the port active and cosmopolitan.

Thessaloniki was incorporated into modern Greece in 1912, following the Balkan Wars. A devastating fire in 1917 destroyed much of the historic center, leading to a large-scale redesign that gave the city its present layout. The 20th century brought further upheaval, including the near destruction of its Jewish community during the Second World War.

Walking through Thessaloniki’s city center, you move between open waterfront space and dense layers of history. Aristotelous Square opens toward the sea, setting a grand civic stage. Inland, the Rotunda of Galerius and the Arch of Galerius mark the Roman heart of the city. Nearby, the Church of Hagia Sophia and Hagios Demetrios reveal Byzantine continuity, while the White Tower of Thessaloniki anchors the shoreline as the city’s enduring symbol, within a compact, walkable urban core.

Today, Thessaloniki stands as a living archive of antiquity, empire, and resilience-defined by continuity, adaptation, and an unusually deep sense of historical memory.