Economy of Bulgaria (574 euro) (December, 2017). The national currency is the lev (plural leva), pegged to the euro at a rate of 1.95583 leva for 1 euro. The lev is the strongest and most stable currency in Eastern Europe. The strongest sectors in the economy are energy, mining, metallurgy, machine building, agriculture and tourism. Primary industrial exports are clothing, iron and steel, machinery and refined fuels. The trading partners with largest contribution to the import/export are Germany, Italy, Romania, Turkey, Greece, Russia, France, Spain, Poland, Netherlands, China, Hungary and Belgium. Sofia is the capital and economic heart of Bulgaria and home to
Tourism in Bulgaria are around 4,500 discovered underground formations in Bulgaria. The earliest written records about the caves in Bulgaria are found in the manuscripts of the 17th century Bulgarian National Revival figure and historian Petar Bogdan. The first Bulgarian speleological society was established in 1929. The caves in the country are inhabited by more than 700 invertebrate species and 32 of the 37 species of bats found in Europe. Most visitors arriving in Bulgaria on short-term basis came from the following countries of nationality: Tourism in Bulgaria Tourism in Bulgaria is a significant contributor to the country's economy. Situated at the crossroads