The construction of the castle in Gosławice can be combined with the Poznań bishop Andrzej Łaskarz, who began to build his residence around 1418. The castle together with the village later belonged to many Wielkopolska families. Archaeological research shows that it was destroyed during the Swedish Deluge, and at the beginning of the 19th century, the ruined building became part of the farm and was partially converted into a brewery.
The original brick castle consisted of two parallel, two-storey and bicameral on each floor houses, connected by a third, closing the inner courtyard with a width of 8 meters. The entire quadrilateral assumption was 22x25m. Arrowslits in the outer walls of houses testify to its defensive character. In the second phase of the expansion in the first half of the fifteenth century, the castle was expanded and a dansker was added. A quadrilateral of external walls with dimensions of 38×42 m was created. In the corners of the new perimeter wall, overhanging, cylindrical towers were built, possibly connected with a shooting porch. The eastern wall was reinforced, thickening it to 2,3 m. The gate in the northern curtain was preceded by a drawbridge.
The castle, renovated in the post-war period, consisting of a perimeter wall and two whitewashed, two-story buildings is now the seat of the District Museum in Konin. In the gothic cellars there is a permanent and temporary archaeological exhibition, and in the upper rooms, among others are exhibitions depicting the history of Konin.
Leksykon zamków w Polsce, L.Kajzer, S.Kołodziejski, J.Salm, Warszawa 2003.