The Parish Church of St. Gallus and Ulrich was built in 1734-1738 by Johann Georg Fischer through the conversion of a Gothic church predecessor. It was extensively renovated between 1974 and 1980. The church contains a Madonna of 1623 (attributed to Hans Zürn the Elder), a baroque pulpit of divination Johann Wilhelm (1745) and numerous tombs of the 16th and 17th century. The church also has a valuable treasure of silver (1741-1755) from the workshop of the Augsburg silversmith Franz Christoph Mäderl.
The church also contains a purported relic of Saint Clemens that is in fact an example of a so-called catacomb saint, a corpse that has been taken from the Roman Catacombs, decorated, given a fictitious name, and presented as the relic of a Roman Catholic saint.
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.