The Monastery of Saint John of Rila, better known as the Rila Monastery is the largest and most famous Eastern Orthodox monastery in Bulgaria. It is situated in the northwestern Rila Mountains, 117 km south of the capital Sofia in the deep valley of the Rilska River at an elevation of 1,147 m above sea level.

Founded in the 10th century, the Rila Monastery is regarded as one of Bulgaria's most important cultural, historical and architectural monuments. It is on account of this also a key tourist attraction in Bulgaria and Southeastern Europe as a whole.


source: Wikipedia