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The UNESCO Monuments of Thessaloniki

Published 5 September 2026 · by ThessalonikiHub

The Church of Saint Demetrios lit at dusk, a UNESCO monument of Thessaloniki

A guide to the Paleochristian and Byzantine monuments that made Thessaloniki a World Heritage Site.

Thessaloniki is a living museum of Christian art and architecture. In 1988 UNESCO inscribed 15 Paleochristian and Byzantine monuments on the World Heritage List: recognising an unbroken story of eleven centuries, from the 4th to the 15th. You don't need to see them all; half a day to a day covers the most important, almost all on foot.

What the UNESCO monuments are

They are churches, a monastery, a bath and the city walls, which together trace the evolution of Byzantine architecture and mosaic art. Many are still working churches.

Where to start

Begin at the Rotunda, the imposing 4th-century Roman structure with outstanding early-Christian mosaics in the dome. A few metres downhill on Egnatia stands the Arch of Galerius (the "Kamara").

The great churches of the centre

The Church of Saint Demetrios, dedicated to the patron saint, is the city's largest; don't miss the underground crypt. Within walking distance: Hagia Sophia (8th c.) with the Ascension in its dome, the Acheiropoietos (5th c.) and the all-brick Panagia Chalkeon (1028).

Ano Poli

Climb up to the Upper Town for Vlatades Monastery (the only working Byzantine monastery) and the Byzantine walls, with the finest view over the city and a perfect sunset.

Practical tips

The churches are places of worship: dress modestly and respect service times. Most in the centre link into a 2–3 hour walk; save Ano Poli for a separate half-afternoon.

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