Koło Castle was a 14th century gothic castle, constructed by Casimir III The Great, the last Piast ruler of Poland. The castle secured the route from Greater Poland to Łęczyca, in the lowlands of the River Warta. The castle is located on an artificial hill on a meander of the River Warta. During the raising of the castle, the river had a number of tributaries in the area, which were important for the castle's strategic location.
