The medieval church of St. Clemens in Sauvo was built to present three-aisle outfit probably in 1460s or 1470s. First record of the Sauvo Church in Turku Cathedral documents dates back to the year 1346, but there have been several wooden churches before even from the beginning of 13th century.
Many renovations were made to the church during 17th century, but the interior is very well-preserved. Mural paintings are from the 15th century and there are several medieval artefacts, like an altar, triumph crucifix and tabernacle.
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.