In the 14th century, on the orders of King Casimir the Great, a castle was built in Złotoria to protect the border between the Kingdom of Poland and the Teutonic Order. Its modest, picturesque ruins now stand alone in the fork of the Vistula and the Drwęca rivers flowing into it. The castle made its mark in the Polish literature. Henryk Sienkiewicz chose it as the place of death of Danusia's mother in "Krzyżacy” [Teutonic Knights], while Józef Ignacy Kraszewski included a literary description of the siege of the castle in his novel "Biały Książe” [White Prince].