Rila Monastery was founded in the 10th century by St John of Rila, a hermit canonized by the Orthodox Church. His ascetic dwelling and tomb became a holy site and were transformed into a monastic complex which played an important role in the spiritual and social life of medieval Bulgaria. Destroyed by fire at the beginning of the 19th century, the complex was rebuilt between 1834 and 1862. A characteristic example of the Bulgarian Renaissance (18th–19th centuries), the monument symbolizes the awareness of a Slavic cultural identity following centuries of occupation.

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.