St. Margaret's Church in Patzig was erected in 1381, but nothing is left of that original structure. The current church is a single-nave church, to which a wide, rib-vaulted parish hall was added later on. The granite font (c.1250) is probably a remnant of the original structure and possibly the oldest baptismal font in Rügen. The memorial slab for Peter von Patzig (†1339) has a carved drawing that shows the clergyman with a chalice and wafer. The pulpit and organ gallery were built in the 17th century. Patron's boxes and memorial slabs indicate the close relationship with the estates of aristocratic families in the parish of Patzig.
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.