Nijmegen Castle is a historic fortress located in the city of Nijmegen, the oldest city in the Netherlands. Built in the 11th century, it served as a royal residence and military stronghold. The castle was strategically positioned on a hill overlooking the Waal River, providing a vantage point for defense and control of the surrounding area. Over the centuries, Nijmegen Castle underwent various renovations and changes in ownership. Today, only remnants of the original structure remain, including parts of the walls and foundations. The site is a popular tourist attraction, offering visitors a glimpse into the region's medieval history.