The Krounebierg aquatic centre in Mersch has a first-floor wellness area with an indoor bio sauna at 70°C and three outdoor saunas on a terrace overlooking the valley: a 90°C Aufguss sauna with a different infusion every hour, a 90°C herbal sauna and a dry 110°C sauna. There are also an infrared cabin, a steam bath, two whirlpools and an outdoor cold plunge pool. A full-day adult sauna ticket, pool included, costs €22.50.