The ruins of Czorsztyn Castle stands at the top of the hill nearby Dunajec. According to Jan Długosz, in 1246 the owner of the castle was Piotr Wydżga. However that theory was never after confirmed by other historians, so the beginnings of castle functioning are dated on 14th century. Large development of the castle took place during the reign of Casimir III the Great. In years 1629–1643, when Jan Baranowski was a starosta of Czorsztyn, the castle was fundamentally rebuilt. In 1790 the roof of the castle burnt after a thunder clap. In the result castle was quickly broken down and became empty.
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.