What does BG-03 mean in Subdivisions?

Varna, Bulgaria

Varna (Bulgarian: Варна, pronounced [ˈvarnɐ]) is the third-largest city in Bulgaria and the largest city and seaside resort on the Bulgarian Black Sea Coast and in the Northern Bulgaria region. Situated strategically in the Gulf of Varna, the city has been a major economic, social and cultural centre for almost three millennia. Historically known as Odessos (Ancient Greek: Ὀδησσός), Varna developed from a Thracian seaside settlement to a major seaport on the Black Sea. Varna is an important centre for business, transportation, education, tourism, entertainment and healthcare. The city is referred to as the maritime capital of Bulgaria and has the headquarters of the Bulgarian Navy and merchant marine. In 2008, Varna was designated as the seat of the Black Sea Euroregion by the Council of Europe. In 2014, Varna was awarded the title of European Youth Capital 2017.The oldest gold treasure in the world, belonging to the Varna culture, was discovered in the Varna Necropolis and dated to 4600–4200 BC. Since the discovery of the Varna Necropolis in 1974, 294 burial sites have been found, with over 3000 golden items inside.

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