The history of the Toszek Castle dates back to the tenth-eleventh century, when an early defensive castle was located on the castle's grounds. The castle was built two centuries later, in about the year 1222. When the Kingdom of Poland was under feudal fragmentation, the castle housed the following Silesian dukes and castellans. The most important part of the castle's being, was that under the rule of Duke Przemysław Toszecki, of the Oświęcim family line. After his death the castle became of property of the Dukes of Opole. In the sixteenth century, the castle was the property of the Habsburgs. Which gave the castle to do Redernów family, which they bought in 1592. In between 1638-1707 the castle was ruled by the Colonna family, which had made a full-scale reconstruction of the castle - by which the castle became a magnate residence, the first one in Upper Silesia. The following owners were: Johann Dietrich von Peterswald, Count Franciszek Karol Kotuliński, Posadowski family, and finally Adolf von Eichendorff.
In 1797, the castle was sold to Count Franciszek Adam Gaschinów. Shortly after, in 1811, the castle burned down and became a ruin. In 1840 the ruins were bought by Abraham Guradze, and the Guradze family maintained possession of the castle until World War II, when Abraham's great-grandson Count Kurt von Guradze bequeathed the castle to the youth of Poland. The castle was finally partially rebuilt in the 1950s and 1960s. Today, the castle houses a centre of culture, and a primary wedding celebration venue.
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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.