A network of caves that were established during the Second World War in the city of Maastricht, and this area is very interesting and beautiful, and is an ideal place to discover if you are a fan of history and archeology, and the various tours in this place are famous, whether on foot or through bike tours With passionate guides in the field of history and archeology, you can climb to the top of the hill to enjoy an ideal view of the surrounding natural features. Besides, visitors can go to the café for the most delicious drinks and light food.