Château des Thermes

Château des Thermes sits in a wooded valley along the Vesdre river in Chaudfontaine, Liège Province, drawing on the 'Astrid' spring — Belgium and the Benelux region's only genuinely hot natural spring. The water infiltrates through the Ardennes' near-impenetrable rocky, limestone soil, taking over 60 years to percolate down to roughly 1,600 meters, where it reaches about 55°C before rising back to the surface at around 37°C, gaining bicarbonate minerals along the way through natural filtration. The spring, pinpointed in 1984, also supplies the well-known Chaudfontaine-Sources bottled water brand, which has drawn on the area's mineral waters for roughly a century. The Château combines thermal bathing with fine dining in a prestigious countryside setting; children under 13 are not admitted.