Freizeitbad Heveney sits on Lake Kemnade in Witten and combines a leisure pool with water slides and a separate nude sauna and brine area. It has ten saunas and a steam bath, among them a kelo sauna, a 100 °C earth sauna heated by an open fire, a mine-gallery sauna, an Aufguss lounge with infusions every half hour, a steam grotto, plus a 32 °C thermal brine pool, a cold plunge and a crushed-ice basin. Open 9:00–22:00 (Fri–Sat to 23:00, Sun to 21:00); a weekday sauna day ticket costs €24.
Medi Therme Bochum is a Mediterranean-style sauna and thermal spa beside the Ruhrpark with 16 saunas and steam rooms, including a Moorish hammam with a heated granite slab, a Himalayan salt grotto, a salt sauna, infrared and bio saunas, and stone-sauna Aufguss sessions every 15 minutes. Indoor and outdoor pools, plunge pools and a 10,000 m² garden complete it. The whole facility is used nude, and entry starts at age 14. A weekday day ticket costs €42.50; open from 11:00 daily.
Saunalandschaft Wischlingen is the sauna area of the Solebad in Dortmund's Revierpark Wischlingen, spread over two floors and more than 12,000 m². It has 11 saunas plus an infrared cabin and a salt grotto: a wood-fired Kamin sauna, a Lappland kelo log sauna for about 100 people, herbal, salt and steam rooms, themed Aufguss sessions, plunge pools and a 34 °C garden pool. Sauna use is nude only. Open daily 9:00–22:30; a day ticket costs €23.50 on weekdays.
Hagen's Westfalenbad pairs a sports and leisure pool with a large nude sauna area. Its nine heat rooms include an island sauna in a natural swimming pond, a wood-fired earth sauna and kelo sauna, an Aufguss sauna with regular scented infusions, a projection sauna, a panorama sauna and a steam bath with a starry ceiling, plus a graduation tower, crushed ice and cold showers. Tuesday is women's sauna day. Sauna open 10:00–22:00, to 23:00 on Friday and Saturday; three hours cost €21.50 on weekdays.
Freizeitbad Heveney sits on Lake Kemnade in Witten and combines a leisure pool with water slides and a separate nude sauna and brine area. It has ten saunas and a steam bath, among them a kelo sauna, a 100 °C earth sauna heated by an open fire, a mine-gallery sauna, an Aufguss lounge with infusions every half hour, a steam grotto, plus a 32 °C thermal brine pool, a cold plunge and a crushed-ice basin. Open 9:00–22:00 (Fri–Sat to 23:00, Sun to 21:00); a weekday sauna day ticket costs €24.
Medi Therme Bochum is a Mediterranean-style sauna and thermal spa beside the Ruhrpark with 16 saunas and steam rooms, including a Moorish hammam with a heated granite slab, a Himalayan salt grotto, a salt sauna, infrared and bio saunas, and stone-sauna Aufguss sessions every 15 minutes. Indoor and outdoor pools, plunge pools and a 10,000 m² garden complete it. The whole facility is used nude, and entry starts at age 14. A weekday day ticket costs €42.50; open from 11:00 daily.
Saunalandschaft Wischlingen is the sauna area of the Solebad in Dortmund's Revierpark Wischlingen, spread over two floors and more than 12,000 m². It has 11 saunas plus an infrared cabin and a salt grotto: a wood-fired Kamin sauna, a Lappland kelo log sauna for about 100 people, herbal, salt and steam rooms, themed Aufguss sessions, plunge pools and a 34 °C garden pool. Sauna use is nude only. Open daily 9:00–22:30; a day ticket costs €23.50 on weekdays.
Hagen's Westfalenbad pairs a sports and leisure pool with a large nude sauna area. Its nine heat rooms include an island sauna in a natural swimming pond, a wood-fired earth sauna and kelo sauna, an Aufguss sauna with regular scented infusions, a projection sauna, a panorama sauna and a steam bath with a starry ceiling, plus a graduation tower, crushed ice and cold showers. Tuesday is women's sauna day. Sauna open 10:00–22:00, to 23:00 on Friday and Saturday; three hours cost €21.50 on weekdays.