Thessaloniki (Greek: Θεσσαλονίκη [θesaloˈnici]) is the second-largest city in Greece and the capital of Greek Macedonia, the administrative region of Central Macedonia and the Decentralized Administration of Macedonia and Thrace. Its nickname is η Συμπρωτεύουσα (Symprotévousa), literally "the co-capital", a reference to its historical status as the Συμβασιλεύουσα (Symvasilévousa) or "co-reigning" city of the Eastern Roman (Byzantine) Empire, alongside Constantinople.
The municipality of Thessaloniki, the historical center, had a population of 385,406 in 2007, while the Thessaloniki Urban Area had a population of 800,764. and the Thessaloniki Metropolitan Area had 1,104,460 inhabitants in 2011.
Thessaloniki is Greece's second major economic, industrial, commercial and political centre, and a major transportation hub for the rest of southeastern Europe;its commercial port is also of great importance for Greece and the southeastern European hinterland. The city is renowned for its festivals, events and vibrant cultural life in general, and is considered to be Greece's cultural capital. Events such as the Thessaloniki International Trade Fair and the Thessaloniki International Film Festival are held annually, while the city also hosts the largest bi-annual meeting of the Greek diaspora. Thessaloniki is the 2014 European Youth Capital.