A brick castle in the Gothic style built in the years 1434–1449 by the Bishop of Kujawy, Władysław Oporowski.
Formerly, it was the centre of the extensive landed estates of the Oporowski family of the Sulima coat of arms. In 2007, it was entered into the State Register of Museums.
The beginning of the castle complex was a knight's residential tower, built at the beginning of the 15th century on an artificial island, built in the middle of one of the branches of the Słudwia River. Later, residential buildings were built surrounding a small cobblestone courtyard, defensive walls and a semicircular tower with a chapel on the first floor. The castle is dominated by the north-west corner tower decorated with a Gothic dagger.
Despite many reconstructions made in the 17th, 18th and 19th centuries, only minor changes were made. They left behind Renaissance ceilings, Baroque window openings on the first floor, and Classicist stucco. The annex in the courtyard, the so-called "cupboard", as well as the neo-Gothic portal of the entrance gate and the terrace in front of the bridge, date from around 1840. The castle is surrounded by a landscape park established in the first half of the 19th century.