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:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.