Kwidzyn contains the partially ruined 14th century Brick Gothic Ordensburg castle of the Teutonic Order, namely the Bishops of Pomesania within the Order. Connected to the castle to the east is a large cathedral (built 1343-1384) containing the tombs of the bishops as well those of three Grand Masters of the Teutonic Knights.
The former Prussian fortress in Kwidzyn, which was occupied by the Teutonic Knights in 1233, received the city rights during the same year. In 1440 there was established the Prussian Union - today the Pomesanian"s cathedral chapter is the most precious historic and architectural treasures of Kwidzyn.
The wings of the castle with towers at the corners belonged to the defense system. Main tower today dominates the entire massif of the castle, which was also a bell tower lookout. The literally outstanding feature is a characteristic tower 'dansker' known as gdanisko of 1384. It was set by more than 50 meters from the west wing of the castle and the castle was combined with a long five spanning porches. Today the castle houses the Museum of the Castle. Kwidzyn history, its monuments and picturesque surroundings are enough attractions to visit for even the most demanding tourists.
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.