Nonnberg Abbey is a Benedictine monastery in Salzburg founded ca. 714 by Saint Rupert of Salzburg. It is the oldest women's religious house in the German-speaking world. Its first abbess was Saint Erentrudis of Salzburg, who was either a niece or a sister of Saint Rupert.
The abbey was independent of the founding house from 987 and was re-built in about 1000. This building was largely destroyed in a fire of 1423. Reconstruction took place between 1464 and 1509.
The nunnery′s church Maria Himmelfahrt is Salzburg′s oldest church dedicated to the holy Virgin Mary and is one of the most significant churches of the city. It was built in late-gothic style with three naves from 1464 to 1506. In 1624 the church was enlarged by the addition of three side chapels. A refurbishment in the Baroque style took place in the 1880s. The church contains a Romanesque crypt that visitors should note, with the tomb of St. Erentrudis. The entrances to the crypt are in the side-naves.
Through Maria Augusta Kutschera, later Maria Augusta von Trapp, who was a postulant in the abbey after World War I and whose life was the basis for the film The Sound of Music, the abbey has acquired international fame. The Mother Abbess during Maria's time at Nonnberg was Sister Virgilia Lütz (1869-1949).
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.