Ciechanów Castle is a historic fortress located in the town of Ciechanów, Poland. Built in the 14th century, it served as a residence for the Mazovian dukes. The castle features Gothic architecture and is surrounded by a moat, adding to its defensive capabilities. Today, Ciechanów Castle is a popular tourist attraction, showcasing its well-preserved walls and towers. Visitors can explore the castle's interior, which includes exhibitions on the history of the region and the castle itself. The site also hosts cultural events, making it a vibrant part of the local community.