St. Marienthal Abbey (Kloster St. Marienthal) is the oldest nunnery of the Cistercian Order in Germany to have maintained unbroken occupation of its house since its foundation. St. Marienthal is located to the south of Ostritz on the left bank of the Neisse, which at this point forms the German border with Poland.
The abbey was founded in 1234 by Kunigunde of Hohenstaufen, daughter of Philip of Swabia and wife of Wenceslas I of Bohemia, near a trade route that ran from Prague to Görlitz via Zittau. As early as 1235 the new foundation was incorporated into the Cistercian Order, with the abbot of Altzella acting as visitor. The first documented abbess of St. Marienthal Abbey was the noblewoman Adelheid I. von Dohna, daughter of Burgrave Otto von Dohna.
The abbey was destroyed during the Hussite Wars in 1427, and not rebuilt until 1452. It was damaged by fire in 1515, 1542 and (particularly seriously) in 1683. Rebuilding in the Baroque style began in 1685. The Baroque church interior suffered extensive damage in a flood of the Neisse in 1897.
During World War II the buildings were used as a military hospital. In 1945 the retreating German forces wanted to blow up the abbey to hinder the advance of the Russians, but the nuns refused to leave, and the building was spared.
The abbey survived the Communist East German régime and after 1989 spent large sums on restoration and developing the facilities. In August 2010 however another flood of the Neisse caused catastrophic damage.
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.