Kętrzyn Castle, located in the town of Kętrzyn in Poland, is a historic structure built in the 14th century. Originally constructed by the Teutonic Knights, the castle served as a defensive fortress and later became a residence. Its architecture reflects the Gothic style, featuring thick walls and a central courtyard. Today, Kętrzyn Castle is a popular tourist attraction, showcasing exhibitions related to the region's history. Visitors can explore its well-preserved rooms and learn about the castle's significance during various historical periods, including its role in the Prussian and German eras.