The Monastery of Saint Ivan of Rilais the largest and most famous Eastern Orthodox monastery in Bulgaria. It is situated in the southwestern Rila Mountains, 117 km south of the capital Sofia.
The monastery is named after its founder, the hermit Ivan of Rila (876 - 946 AD), and today houses around 60 monks.
Founded in the 10th century, the Rila Monastery is regarded as one of Bulgaria's most important cultural, historical and architectural monuments and is a key tourist attraction for both Bulgaria and Southern Europe. In 2008 alone, it attracted 900,000 visitors.
Tip : You can stay at Rila Monastery for one night. It is only 10 euro for one night without shower.( with shower 15 euro )It is really nice in the night without so many people in the day time. Also you stay one night here, you can get access to upstairs. so you can get different view of Monastery.