Bulgaria is a country with an ancient history dating back to prehistoric times, the Thracian, Greek and Roman worlds of antiquity, and the powerful medieval Old Great Bulgaria founded in 632 and Bulgarian Empire founded in 681. Geographically and climatically, Bulgaria is noted for its diversity, with the landscape ranging from the Alpine snow-capped peaks in Rila, Pirin and the Balkan Mountains to the mild and sunny weather of the Black Sea coast, from the typically continental Danubian Plain (ancient Moesia) in the north to the strong Mediterranean influence in the valleys of Macedonia and the lowlands in the southernmost parts of Thrace.

Bulgaria joined NATO on March 29, 2004 and the European Union on January 1, 2007. The country has been a member of the United Nations since 1955, and is a founding member of OSCE. As a Consultative Party to the Antarctic Treaty, Bulgaria takes part in the governing of the territories situated south of 60° south latitude.