There has been a church on this site since the 14th century, although two severe fires have caused that it has been rebuilt twice. Much of the present appearance of the church is owing to a restoration carried out in 1904, when the church was decorated attractively in the Art Nouveau style. Much of the interior is embellished with floral motifs including roses. Religious items, including the pulpit and altarpiece, date mainly from the 18th century.
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.