The electoral hunting lodge Breitenbrunn (Jagdhaus) in the Ore Mountains community of the same name was converted from a watchtower, which was probably built in the 13th or 14th century, is now a ruin under monument protection and is a landmark of the place.
After a Vorwerk of the Schwarzenberg rulership was first built and later a settlement was built, the watchtower was converted into a hunting lodge, accommodation and storage for hunting utensils. The building, which was also used as the forester's house, burned down in 1610, including the newly added third floor and added Wendelstein, and in 1617, was rebuilt and fell into ruin, apparently unused, after 1700.
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.