Thessaloniki: Roman Monuments

The Rotunda and Arch of Galerius are Rome's finest monuments in Greece. Byzantine wine culture continued what Romans started. The waterfront promenade is perfect for evening wine.

What to do there

4 things to do

1. 1 Decode the Arch That Humiliated a Defeated Caesar History · Free

   Where: Arch of Galerius (locally called Kamara), at the junction of Egnatia Avenue 144 and Gounari Street, Thessaloniki city center. Free to access, 24 hours.

   What: In 297 AD, Galerius suffered a humiliating defeat against the Sassanid Persians near Carrhae — the same cursed place where Crassus lost his legions in 53 BC. Diocletian was so furious that Galerius reportedly had to walk in front of the imperial chariot on foot, in his purple robe, for a full mile. Then Galerius rebuilt his army, crossed into Armenia, and annihilated Shah Narses at the Battle of Satala in 298. He captured Narses's treasury, his harem, and his wife. He marched south and sacked Ctesiphon, the Persian capital. The Treaty of Nisibis — the most favorable peace Rome ever imposed on Persia — gave Rome seven cities beyond the Tigris and made Armenia and Georgia Roman vassals. This arch, built 303 AD, is the propaganda monument for that reversal. Look at the carved relief panels on the surviving pylon: Galerius on horseback, lance raised, attacking a mounted Narses — an eagle carrying a victory wreath is swooping in over Galerius's shoulder. Terrified Sassanid soldiers cower under his horse's hooves. Two-thirds of the arch survived 1,700 years. The panels have been here since the year the last Roman persecutions of Christians were underway.

   How: Stand directly beneath the arch and look up at both sides of the pylon. The four stacked registers of relief sculpture tell the campaign in sequence from bottom to top. After the arch, walk 200 meters north along Gounari Street to reach the Rotunda — Galerius built a colonnaded street connecting the two monuments. You are walking the imperial processional route.

   Backup: The arch is open-air and always accessible. If construction or scaffolding partially blocks the panels, the Byzantine Legacy website (thebyzantinelegacy.com) has high-resolution panel photography with identification of each scene — bring it on your phone.

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2. 2 Enter the Building That Refused to Die — Roman Tomb, Christian Church, Ottoman Mosque History · Price: low

   Where: The Rotunda of Galerius (Agios Georgios), Plateia Agiou Georgiou, 200m north of the Arch of Galerius. Entry approximately €6 adult. Open 08:30-15:30, CLOSED TUESDAYS. Consider the combined €15 ticket covering this plus the Roman Agora and Galerius Palace — valid 3 days.

   What: Galerius ordered the Rotunda built around 306 AD. The walls are over 6 meters thick — it has outlasted earthquakes that leveled the city around it. He never used it. He died in 311 AD far from Thessaloniki, in what is now Serbia, before it was finished. Constantine the Great converted it into Thessaloniki's first Christian church — then dedicated it to Saint George. Seventeen centuries of religious politics played out inside this cylinder: Byzantine mosaics (4th-6th century AD) still cover the upper walls, showing saints in architectural niches of extraordinary gold tesserae. In 1590-91 the Ottomans added a minaret and converted it to a mosque. When Greece liberated Thessaloniki in 1912, they reconsecrated it as a church — and deliberately LEFT the Ottoman minaret standing. It still stands. From the outside you can see all three lives of the building at once: Roman cylinder, Byzantine apse, Ottoman minaret. UNESCO inscribed this in 1988. This is one of the oldest structures in Europe with visible religious sediment from three world faiths.

   How: Buy your ticket at the door. Inside, look up — the dome interior retains fragments of golden mosaics. Walk the perimeter slowly; the restoration scaffolding (if present) means the mosaics are being actively maintained. Before leaving, walk to the east side of the exterior to see the minaret up close — note where the Ottoman-period brickwork joins the Roman cylinder.

   Backup: If closed (Tuesday or unexpected closure), the exterior circuit of the Rotunda tells the architectural story without needing to enter. The minaret is fully visible from Plateia Agiou Georgiou. Combine with the Galerius Palace Arched Hall excavations (Navarinou Square, ~400m south), which are included in the combined ticket.

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3. 3 Descend Into the Underground Forum That Workers Found by Accident in the 1960s History · Price: low

   Where: Roman Forum (Ancient Agora of Thessaloniki), junction of Filippou and Aristotelous streets, Plateia Dikastirion area. Entry €8 adult / €4 reduced (or use the combined €15 ticket). Open 08:30-15:30, CLOSED TUESDAYS.

   What: In the 1960s, construction workers began digging to lay foundations for new law courts in the center of Thessaloniki. They hit stone. Then columns. Then a two-terraced marketplace, a small theater, and an underground vaulted corridor that had been sealed under the city for centuries. The entire site is one of the largest accidental archaeological discoveries of modern Greece. The forum dates to the late 1st century AD — Thessaloniki's civic heart under the Roman Empire, the place where 150,000 people (the city's Roman-era population) held assemblies, heard legal cases, and watched theatrical performances. The odeon in the forum's east wing was built for 1,000 spectators — today it STILL hosts concerts and performances in summer. The cryptoporticus (semi-subterranean vaulted corridor) was the Roman version of a climate-controlled storage and service corridor running beneath the forum's upper terrace. Walk its length and feel the temperature drop: this is Roman architecture serving a function as elegantly as any modern climate system.

   How: Enter the site from Filippou Street. Walk the upper forum terrace first, noting the column bases and the paving stones. Descend to the odeon — look for the orchestra floor and the seating banks. Then descend into the cryptoporticus and walk its full length; there is a small underground museum at the end showing pottery, coins, and sculptures found during excavation (additional €2 entry). Ask at the ticket desk if afternoon concerts are scheduled in the odeon — the program runs from June through September.

   Backup: If closed, the site is partially visible from street level above. The Thessaloniki Archaeological Museum (Manoli Andronikou 6) has key finds from the forum and covers the full Roman-era city — admission €10, also included in the combined ticket.

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4. 4 Taste the Wine That Grew in the Kingdom Rome Absorbed — Xinomavro at the Waterfront Wine · Price: low

   Where: Begin at the White Tower (Lefkos Pyrgos), waterfront, Thessaloniki — free to walk the promenade; White Tower Museum entry €3. Then walk to a wine bar in the Ladadika district (10 minutes west along the waterfront), or to Methi Bistro & Wine Bar (Eth. Antistaseos 65, Kalamaria, 20 minutes east by taxi — open Mon-Sat from 18:00).

   What: The White Tower is Ottoman (built post-1430, possibly by Mimar Sinan's circle in 1535), on Byzantine walls, on Roman coastal foundations. This harbor has been continuously in use since at least 316 BC, when Cassander founded Thessaloniki named for Alexander the Great's half-sister. Twenty-three centuries of ships, wine, trade. The Ottoman-era tower became known as the Tower of Blood for its use as a prison and execution site. In 1890 a prisoner whitewashed it in exchange for his freedom — and it became the White Tower. Walk the waterfront promenade at dusk, where the city's entire timeline compresses into one view: Roman arches, Byzantine churches, Ottoman minarets, modern harbor cranes. Then order Xinomavro from Naoussa. Xinomavro — the name means 'sour black' — is the grape of this land. Herodotus recorded vines on Mount Vermion (where Naoussa sits, 70km west) in ancient times. Macedonia was one of Rome's most celebrated wine regions. When you taste Xinomavro — its high acid, firm tannins, pale garnet, aromas of sour cherry and dried tomato — you are tasting a wine style that existed in this landscape when Galerius was building his arch 300 meters away. Naoussa became Greece's first officially protected wine appellation in 1971. Top Xinomavros age 20-40 years — the same aging trajectory as Barolo.

   How: At the wine bar, ask specifically for Naoussa PDO Xinomavro — not just any Greek red. The producers to request by name: Thymiopoulos (biodynamic, world-class benchmark), Kir-Yianni, or Dalamara. If the bar has a reserve or aged Xinomavro (5+ years), order that over the current vintage — it shows you what the tannins resolve into over time. Pair with local Thessaloniki mezze: htipiti (spicy feta dip), grilled halloumi, or any smoked meat board.

   Backup: Methi Bistro carries 500+ labels and 20 by-the-glass including premium northern Greek wines. If Ladadika bars lack Naoussa specifically, ask for Xinomavro from Amynteon (the other northern Macedonia PDO for the grape) — same grape, slightly lighter style, equally historic.

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Insider tips

• The Rotunda interior is stunning

• White Tower for views

• Ladadika district for wine bars

• Food market (Modiano) is excellent