Beersel (near Brussels): This 13th-century castle, 8km (5 miles) south of Brussels, is a castle just like Disney makes them, with turrets, towers, a drawbridge, a moat, and the spirits of all those who have, willingly or unwillingly, resided within its walls. It looks like the ideal place for pulling up the drawbridge and settling in for a siege -- so long as the owners have the foresight to amply stock the rustic Auberge Kasteel Beersel restaurant inside.
Gravensteen (Ghent): Even 900 years after it was constructed, the castle of the Counts of Flanders in Ghent can still summon up a feeling of dread as you peruse its gray stone walls. It's a grim reminder that castles were not all for chivalrous knights and beautiful princesses. This one was intended as much to subdue the independent-minded citizens of Ghent as to protect the city from foreign marauders. Inside are the tools of the autocrat's profession: torture instruments that show that what the Middle Ages lacked in humanity they made up for in invention.
Bouillon (near Dinant in the Ardennes): This was the seat of the valiant but hard-handed and ruthless Godfrey of Bouillon, who led the First Crusade in 1096. His castle still stands today, atop a steep bluff overlooking the town, the bridge over the Semois River, and the road to Paris. Tour its walls, chambers, and dungeons.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.