Bulgaria, situated in Southeast Europe, is known for its diverse landscapes including the Black Sea coast, the Balkan Mountains, and the fertile plains of the Danube River. Sofia, the capital, blends ancient history with modern life, with landmarks like the Alexander Nevsky Cathedral. Bulgaria has a rich cultural heritage, with influences from Thracian, Slavic, and Ottoman civilizations. The country is famous for its yogurt, rose oil, and traditional music and dance. Bulgaria joined the European Union in 2007 and has been working on economic reforms focusing on tourism, agriculture, and industry.