Marmoutier Abbey was a Benedictine monastery, first founded by Saint Leobard around 590. It was rebuilt in the ninth century by Drogo of Metz. Under Abbot Meinhard and his successors in the 12th century, the abbey enjoyed a long period of growth and prosperity, including the consolidation of the large territory. In the 12th century the abbey church of St. Stephen's was built, which still stands today as an imposing Romanesque church. The west end, with its three massive towers, is especially striking.
In the 13th and 14th centuries the abbey began to decline, becoming involved in long wrangles over its properties, mostly with the family of Geroldseck, lords of the town of Maursmünster, now Marmoutier, that had grown up round the abbey. The abbey was also badly damaged during the German Peasants' War in 1525, when a mob ransacked the building and destroyed the library, and again in the Thirty Years' War, when it was plundered by Ernst von Mansfeld's soldiers in 1621.
The latter part of the 17th century saw a revival of the abbey's fortunes, and in the 18th century, particularly under abbots Anselm Moser and Placid Schweighäuser, re-building was undertaken, including the quire of the church in the 1760s. However, the French Revolution saw the dissolution of the monastery and the demolition or sale of all its buildings.
Built over a period of over 700 years, Marmoutier's church has a length of 74 metres and grows younger from West to East: the facade with its porch tower is Romanesque, the nave is Gothic, and the choir was rebuilt in the years 1765–1770 in an early Gothic Revival style.
The western facade of Marmoutier's church is famous for its massive but well balanced architecture, while inside, the 1710 pipe organ by Andreas Silbermann (completed in 1746 by his son, Johann Andreas Silbermann, and restored several times since) and the 18th-century choir stalls are among the most notable items on display.
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.