Bulgaria is a country located in Southeast Europe, bordered by Romania, Serbia, North Macedonia, Greece and Turkey. The capital and largest city is Sofia. Bulgaria has a long history dating back to the 7th century and is famous for its natural diversity, with mountains, plains, and coastline on the Black Sea. Some of Bulgaria's most notable natural attractions include the Seven Rila Lakes, Belogradchik Rocks, and Srebarna Nature Reserve. Cultural sites include the well preserved Roman Theater in Plovdiv, the historic town of Koprivshtitsa, and the Rila Monastery.