The island on Lake Grodzki in the second half of the fourteenth century the Order Knights of St. John built a Gothic castle. Once the mainland, the castle was connected drawbridge, today the area is no longer an island. It consisted of residential and business buildings surrounding a square courtyard, originally cylindrical tower. The whole was surrounded by the castle wall.

For 1648 years the castle was the seat of the commandery religious, in the seventeenth century passed into the hands of Swedish, then in Prussia. In the eighteenth century rebuilt. Preserved buildings, walls and tower with a square base.