The castle was built at the end of the 14th century from the foundation of Wyszota from Kórnik, the brother of the bishop of Poznań, Mikołaj. The first reconstruction is known from the act written in 1426 between Mikołaj of Górka, the chancellor of the Poznań chapter, and the carpenter Mikołaj from Poznań. The utilitarian area of the castle and its defensive features were then expanded. Another expansion is connected with the years 1555-1574 and the voivode of Poznań, Stanisław Górka. The castle then became a renaissance defensive residence. After the death of Stanisław Górka in 1592, the castle was owned by Czarnkowski, and in 1610 it was sold by Andrzej Czarnkowski to Zygmunt Grudziński. From 1676, the castle was owned by the Działyński family. In the second half of the 18th century, Teofila Potulicka from Działyński family rebuilt the castle into a French-style palace. The final change in the appearance of the object was made in the nineteenth century by Tytus Działyński in the style of English neo-gothic.
The medieval castle was built of bricks on a stone foundation, on an earth mound surrounded by a moat. It had the form of a quadrilateral with a cylindrical main tower with a diameter of 8 meters in the north-east corner. The entrance leading from the north was reinforced by a gatehouse, which was protruding from the walls perimeter of 6,5 x 8,5 meters. Inside the castle there was a house with dimensions of 9×10 meters. Perhaps two or three-storey, single-space. After reconstruction from the first half In the fifteenth century, two half-timbered houses were built, three-story, 5,5×11 meters, which formed the shape of the letter L. Two alcoves of shape of semi-cylindrical towers were created next to the houses. The residential house and the gatehouse were also built up with timber floors.
Numerous reconstructions completely obliterated the original appearance of the castle, which medieval walls are hidden in an early modern block. The castle now houses a museum with many unique exhibits: furniture, paintings by Polish and European masters, sculptures, numismatics, Polish and eastern military, as well as porcelain and silver art craft. The castle is also the seat of the Biblioteka Kórnicka PAN, one of the largest libraries in Poland. The museum is open from Tuesday to Sunday: 10.00-17.00, and out of season 10.00-16.00.
Leksykon zamków w Polsce, L.Kajzer, S.Kołodziejski, J.Salm, Warszawa 2003.