The Dryanovo Monastery is a functioning Bulgarian Orthodox monastery situated in the Andaka River Valley, in Bulgarka Nature Park in the central part of Bulgaria five kilometers away from the town of Dryanovo. It was founded in the 12th century, during the Second Bulgarian Empire, and is dedicated to Archangel Michael. Twice burnt down and pillaged during the Ottoman rule of Bulgaria, the monastery was restored at it present place in 1845. It was the site of several battles during the April Uprising of 1876.
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.