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Thessaloniki

City in Greece
Thessaloniki is a Greek port city on the Thermaic Gulf of the Aegean Sea. Evidence of Roman, Byzantine and Ottoman history remains, especially around Ano Poli, the upper town. The ruins of Roman Emperor Galerius’ 4th-century palace include the...
Postal codes: 53xxx, 54xxx, 55xxx, 56xxx
Administrative region: Central Macedonia
Area code: 2310
Demonym(s): Thessalonian, Thessalonican
Founded: 315 BC (2339 years ago)
Gross regional domestic product (PPP 2015): €18.77 billion ($20.83 billion)
Highest elevation: 250 m (820 ft)