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.
The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.