Munsterkerk, built in the 13th century, is the most important example of Late Romanesque architecture in the Netherlands. It was built as part of Cistercian Munster Abbey, a nunnery founded around 1218 by count Gerard III van Gelre.
The oldest part of the church is a choir which was influenced by German cathedrals in Cologne, Speyer etc. The nave was probably built between 1220 and 1244. The church was restored by Pierre Cuypers in second half of the 19th century. The two towers erected during the restoration were damaged by earthquake in 1992.
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.