The castle in Brześć Kujawski was erected by king Casimir the Great within the city walls in the south-west corner of the city. It was probably built after 1346, when the Kujawy land returned to the Kingdom of Poland. From the time of Casimir the Great, the castle was the seat of the starosts. It was burned by the Swedes in the 17th century, and the inspection from 1644 only showed the burned walls. It was pulled down in the early nineteenth century.
It is known that the castle was built of brick and surrounded by a moat. Based on historical plans, it can be assumed that it had the shape of a polygon, closed on all sides by a perimeter wall, while the town’s defensive wall surrounded the castle’s headland slightly wider, constituting from the outside, the second line of the castle’s fortifications. The only entry to it probably led from the north and from this side was located the main castle house, preserved in a strongly rebuilt form to this day. In the south-east corner stood a cylindrical tower, while the southern and western part of the courtyard were occupied by economic buildings.
The main castle building has been preserved to this day, but it completely lost its original features. Currently, it is used by the Post Office and the library.
Leksykon zamków w Polsce, L.Kajzer, S.Kołodziejski, J.Salm, Warszawa 2003.
Widawski J., Miejskie mury obronne w państwie polskim do początku XV wieku, Warszawa 1973.