Klisurski is a monastery of the Bulgarian Orthodox Church located in northwestern Bulgaria. It is the fourth largest monastery in Bulgaria. The complex includes two churches, three residential buildings, a farmyard and a kitchen.
Klisurski Monastery was founded in the 1240 during the Second Bulgarian Empire. It was repeatedly destroyed during the Ottoman rule. In 1862 it was burned down and the monks and pilgrims were killed by a Turkish pasha and his soldiers. The monastery was reconstructed in 1869 and the church was officially consecrated in 1891.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.