At the heart of Müllerthal, a region known as La Petite Suisse Luxembourgeoise (Luxembourg’s Little Switzerland) amid dense forests, moss-covered rocks, and deep valleys, stand two remarkable castles: the medieval Château de Beaufort, whose walls evoke a world of knights and feudal families, and the Renaissance Château de Beaufort, an elegant 17th-century residence that was still a private, lived-in home…