Rømø church was built around 1200 but extended in the 17th and 18th centuries when the island prospered due to whaling. The church is consecrated to the patron saint of sailors, St. Clemens and many ship models, donated by seamen, are hanging in the church. During the last century, rights to have one's name on a church pew were sold, the proceeds being used for church expenses, and many of these can be seen on the pews in the church today. Very interesting churchyard with old headstones of the ship commanders and their families, British and German pilots from World War II.
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.