Thessaloniki, the second-largest city in Greece, has a rich history and cultural significance. The city, also known as Salonika, has several synonyms that capture its diverse qualities. One of them is the "Bride of the North" due to its location in the northern region of Greece. It is also referred to as the "co-capital" of Greece as it has played a significant role in the country's politics and economy. The city's diverse cultural background has earned it the nickname "co-existing city." Another synonym for Thessaloniki is the "Window to the Balkans" as it serves as a hub for transportation and commerce with the Balkans region.