Koeru Church is one of the oldest medieval churches in Järvamaa with a beautiful Baroque tower. The church was built probably in the mid-13th century and expanded to the three-nave form aroud 1300.
The church was damaged badly in Livonian Wars and again in Great Northern War. It was mainly reconstructed in 1721. The present 43m high tower was built in the end of 18th century. The pulpit, altarpiece and crucifix in the church date from the 17th century.
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.