Equilibrium is the 900 m² spa of the four-star Hotel Rössli on the lakeshore in Weggis, open to outside visitors who register in advance. It has a Finnish sauna, a herbal sauna, an aroma steam bath, a caldarium and a plunge pool, a shower landscape with cold-mist and bucket showers, an outdoor brine pool at 35 °C and a rest room with a Himalayan salt wall. The sauna area is a textile-free zone; entry from age 14. Open daily 10:00–19:30.