The castle in Wenecja is a medieval stronghold located in the Kujawsko-Pomorskie Province, in the town of Wenecja, near Żnin. It was built in the mid-14th century by Mikołaj Nałęcz of Chomiąża, also known as the "Devil of Wenecja." The castle served defensive and representative functions, being the seat of the Nałęcz family and an important point on the route between Gniezno and Żnin.