Bulgaria is a Balkan nation with diverse terrain encompassing Black Sea coastline, rivers, including the Danube, and a mountainous interior. A cultural melting pot with Greek, Slavic, Ottoman and Persian influences, it has a rich heritage of traditional dance, music, costumes and crafts. At the foot of domed Vitosha Mountain is its capital, Sofia, dating to the 5th century B.C.E. Bulgaria (110,994 km² – 7.4 million inhabitants) is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east.