The Abbey Church of Otterberg was founded in 1143 by Cistercians as the abbey church of a daughter abbey of the Eberbach monastery. In the 15th century, the monastery slowly declined. In 1504, and in 1525 during the Peasants' War, the monastery was burned and plundered. At the end of the 16th century, the abbey church began to be used simultaneously by the Catholic and Protestant parishes, but not without causing disputes. In 1708, therefore, a separation wall was built between the two spaces. The choir hall with the transept is now used as the Catholic part, the remaining nave as the Protestant part. In 1979, the wall was removed as part of a major renovation, but the structure of the property was not changed.
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.