Solebad Eden at the Hotel Eden im Park in Rheinfelden is a brine bath open to day visitors, with an indoor-outdoor pool of 33°C Rheinfelden natural brine, a Finnish sauna, a steam bath, a herb garden and a Kneipp path. Sauna and steam bath are for ages 16 and up, with women-only sessions on Monday evenings and Thursday mornings. Three-hour entry costs CHF 29; open Sunday to Friday 10 am to 9 pm, Saturday to 6:30 pm.