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 must-visit tourist attraction for both Bulgarians and foreign visitors. The Monastery was founded by the hermit St. Ivan of Rila, whose name it bears, during the rule of Tsar Peter I (927-968). The hermit actually lived in a cave without any material possessions not far from the monastery's location, while the complex was built by his students, who came to the mountains to receive their education.

Located on the outskirts of Sofia, Boyana Church consists of three buildings. The eastern church was built in the 10th century, then enlarged at the beginning of the 13th century by Sebastocrator Kaloyan, who ordered a second two storey building to be erected next to it. The frescoes in this second church, painted in 1259, make it one of the most important collections of medieval paintings. The ensemble is completed by a third church, built at the beginning of the 19th century. This site is one of the most complete and perfectly preserved monuments of east European medieval art.