The oldest mural paintings in the Netherlands are hidden in a beautiful church on the outskirts of Sittard-Geleen. It might be somewhat confusing that there are two churches with the same name in the same village, but you can probably skip the new church in the centre that was built in 1922. The church replaced the ancient one at the castle, which you definitely shouldn't miss if you're in the region.
The history of the old Salviuskerk can be traced back to the late 10th century, but all that remains of the original church hall is the northern wall made of boulders from the River Meuse. Over the centuries, the church was enlarged several times and the tower was erected in 1458. During a restoration in 1977, murals from around 1300 were found. The paintings have been restored and after almost two years of tremendous efforts, which included the stripping of at least 20 layers of lime paint, are now on display. The paintings depict a Mary-themed cycle with portrayals of the childhood of Christ, the coronation of Mary and the salvation. Another sacred item found in this church is a box that supposedly contains pieces of Saint Salvius' bones.
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.