St. Quentin Cathedral in Hasselt was granted to a cathedral in 1967, but its construction began already in the 11th century. The first church was built inthe 8th century and rebuilt in Romanesque style in the 11th century. The cathedral construction continued several centuries. In the 15th century the choir was rebuilt. During the iconoclasm the tabernacle and statues, the altar lateral and the main altar were destroyed. The tower of the present church dates from 1725; it was restored in the 19th century.
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.