St. Stephen's Abbey, dedicated to Saint Stephen, was founded in 969 by Saint Ulrich, Bishop of Augsburg, and used by Augustinian canonesses. It was dissolved in the secularisation of Bavaria in 1803, and the premises passed into the possession of the town. The army used the site for a few years as a quartermaster's store.
In 1828 King Ludwig I of Bavaria founded a grammar school here, as a successor to the former Jesuit college of St. Salvator (1582–1807). In 1835 he established the Benedictine monastery and entrusted it with the running of the school. The buildings were entirely destroyed in 1944 but have been re-built.
The monks continue to run the school and boarding house, and are engaged in pastoral and youth work.
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.