Silesian Ostrava Castle was originally built in the 1280s near the confluence of the Lučina and Ostravice rivers. The castle was built for military purposes due to its proximity to the Polish border.
In 1534, the gothic castle was rebuilt into a renaissance chateau. It burned down in 1872 but was rebuilt. It was restored recently after many years of dilapidation, caused by coal mining under the castle. Today, the castle is one of the most important tourist attraction of the Ostrava city.
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.