Oporów Castle is built of bricks in the Gothic architectural style in between 1434–1449 in the village of Oporów The castle was raised by the Deputy Chancellor of Poland (1429-1434), and highly regarded religious leader Władysław Oporowski.
The first wooden stronghold located in Oporów was recorded in the fourteenth century. The castle is said to have been raised by Mikołaj Oporowski and his son Władysław Oporowski, a highly regarded political and religious leader in the Kingdom of Poland, which in 1428 took on the estate as his own. Up until the eighteenth century the castle was owned by several families: House of Sołołobów, Korzeniowski, Pociejów and the House Oborski. The residence had only once ever been hit by any sort of devastation - in 1657 the castle's top levels caught fire - however, all of the castle was reconstructed. In 1930 the castle was transferred to the Society of the Credit of Land in Warsaw (Polish: Towarzystwo Kredytowe Ziemskie w Warszawie). After World War II the castle was nationalised and reconstructed. In 1949 the castle began housing a museum.
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.