The 28 provinces that make up the Republic of Bulgaria are members of the European Union. The three most significant provinces are Varna, Plovdiv, and Sofia City. Situated in Southeast Europe, the country shares borders with Northern Macedonia, Serbia, Romania, Turkey, and the Black Sea. Bulgaria, with a surface size of 110,993 square kilometers, is the sixteenth largest country in Europe. It has a mainly moderate climate. Lowlands can be found in the northeast and north of the primarily hilly landscape. With 6.4 million people living there, it is one of the least populated nations in the EU. With 1.2 million residents, Sofia is both the most populous city and the capital of the nation. Next in line are Plovdiv and Varna.With 7 million passengers annually, Sofia Airport (SOF) is the biggest airport. With 2.8 million passengers each year, Burgas Airport (BOJ) is the second-largest airport. Bulgaria's domestic and international flights to the Middle East and the European Union are served by both airports. Ancient folk customs mixed with Ottoman ancestry predominate in Bulgarian culture. The majority religion is Eastern Orthodox, and there is a multi-national mix. Bulgarian is the official language. The Civil Law is the foundation of the legal system. There is a parliamentary republican system of governance. Elected President Rumen Radev is the head of state, and elected Prime Minister Galab Donev is the head of government.The Bulgarian Lev (BGN), which is the official currency, is currently worth 1.77 USD. The GDP of the open economy nation, which places it in the 32nd position in the EU, is roughly $100 billion. The per capita income of its people is $14,893. The two main industries that comprise the majority of the GDP are industry and services. Fruits, energy, coal, and gas are a few of the major export goods. There are many different urban and outdoor tourism spots in Bulgaria. The nation is home to ten UNESCO World Heritage Sites. The Alexander Nevsky Cathedral, the Krushuna Waterfalls, the Buzludzha Monument, and the Pirin National Park are a few of the important locations. An estimated 7.8 million tourists visit the country annually, the bulk of which are from Europe and the surrounding region. Bulgaria is concentrating on expanding its winter tourism and ski resorts in addition to the already established tourism industries.