Willemsoord is a large former naval base occupying a prime position on Den Helder's inner harbour. Built in the early nineteenth century, it served as the operational heart of the Royal Netherlands Navy for well over a century. Today the complex has been converted into a cultural district containing the Marinemuseum, a cinema, restaurants, and exhibition halls in the old shipyard buildings.
The architecture of the base is striking — long brick warehouses and workshop buildings arranged around a central dry dock that can still be flooded. The dock now moors the museum's historic warships. Even if you are not visiting the museum, a walk around the exterior of Willemsoord gives a sense of the scale and ambition of nineteenth-century Dutch naval power.