Overview
- The National Defense Heritage Weekend, which runs Saturday and Sunday, opens hundreds of forts, bunkers and waterline works to visitors.
- In Arnhem, guided tours of the secret PTT/KPN nuclear bunker require advance booking and cost €20 for adults and €12.50 for children.
- Fort Pannerden adds family activities that include the Waterline game, a bottle-rocket cannon, a fox hunt and photo moments with a gunner.
- GeoFort near Herwijnen offers kid-led tours on old communications with lessons in Morse code and calls on vintage phones, plus historic walks for adults.
- Fort Vuren screens films on the waterline and runs tours, while Slot Loevestein opens its fortress with a child-friendly exhibit on the rules of war.