Holiday To Belgium | Castle of Bouillon. If you visit Belgium there is one place you want to visit, Castle of Bouillon. This fortress - the fortress is that the oldest and most attention-grabbing the rest of feudalism in Belgium with the first fortress of the eighth century. It's designed on three rocky outcrops and is characterised by a maze of corridors and enormous vaulted halls. The castle became the first known for Godefroid, leader of the first Crusade ( 1096). Eagle education exhibitions throughout the year. You may feel like being among the center ages, was an amazing experience.