Hardeberga Church was built around the year 1200. It was enlarged and the vaulted tower and porch were added in the Middle Ages. The current tower dates mainly from the restoration made in 1909-1910.
The altarpiece dates from the early 17th century and the font from the Middle Ages. The decorated roof was painted by Godfrey Pettersson in 1909. In 2003 archaeologists found the previously unknown rune carving from the north wall.
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.