Fort Kijkduin hosts a military fort museum alongside an aquarium located in a maze of underground tunnels, all on the coast of the North Sea. The fort in its original form was built between 1811 and 1813 by hundreds of Spanish
war prisoners, at the order of Napoleon himself. Kijkduin has been the backdrop for many important events in Dutch history, such as the battle of Kijkduin and the fort’s invasion by the English in 1799, still one of the biggest and
bloodiest battles in Dutch history. “Fort Kijkduin has been utilised by many different military units,” explains director André Koning.