Mattmar Church was built in the 1300s to the site, where before was a wooden stave church from the 11th century. The porch was restored and enlarged in the 18th century. The pulpit dates from 1662 and font was acquired to the church in 1686. There are also several wooden sculptures from the Middle Ages. The external belfry was erected in 1765 and the lychgate dates also from the 18th 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.