Frauenalb Monastery was founded in the late 12th century. It accepted as members only daughters of noble families. The accidental fire destroyed the monastery in 1508 and only abbey church built in 1404-1406 survived. The rebuilt monastery was looted again in 1525 during Peasants War.
Shortly after 1600 the last woman left the monastery. Today a foundation takes care of the preservation of the remarkable ruin.
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.