Quick FactsOverview
About Cassiopeia Therme Badenweiler
Cassiopeia Therme Badenweiler, Germany is a paid Thermalbad at Ernst-Eisenlohr-Straße 1 in Badenweiler in the southern Black Forest, approximately 30 km south of Freiburg im Breisgau. The thermal water is an artesian acratotherm, rising naturally under pressure with a balanced mineralisation. Romans built the first thermal bath at this site approximately 2,000 years ago; the well-preserved ruins of what was once the largest Roman thermal bath north of the Alps stand directly adjacent and are visible from the facility's terrace.
The Cassiopeia Therme covers 3,800 square metres with over 1,000 square metres of water surface and is organised around four zones. The thermal baths include the Kuppelbad, a 32-degree dome pool whose steel structure won the German Steel Construction Prize; the Marmorbad at 34 degrees with massage jets; grottos at 36 degrees; an outdoor pool with a flow channel; and a cold treading pool at 12 degrees. The sauna world has indoor and outdoor saunas and a textile-free thermal pool. The Roman-Irish bath, at extra charge, is a guided circuit of steam and hot-air rooms. The wellness oasis provides massages and body treatments. Free aqua gymnastics sessions are included in standard admission. The facility holds five Wellness Stars and is fully barrier-free certified.
Location & Access
Getting to Cassiopeia Therme Badenweiler
Cassiopeia Therme Badenweiler is at Ernst-Eisenlohr-Straße 1, 79410 Badenweiler. By car from Freiburg im Breisgau, travel approximately 30 km south on the B3 or B378 through Mullheim and follow signs into Badenweiler; the drive takes around 35 minutes. From Basel in Switzerland, travel approximately 40 km north on the A5 or B3; journey time is approximately 40 minutes. From Colmar in France, the Therme is reachable in approximately 50 minutes via the Rhine crossing at Breisach.
Badenweiler is served by bus from Mullheim railway station, which has regular direct train connections to Freiburg and Basel. From Mullheim, bus services to Badenweiler run throughout the day, with a journey time of approximately 15 minutes. Badenweiler town centre is compact and walkable, and the Therme is centrally located within a short walk of hotels and guesthouses. Two hours of free parking are provided for Therme guests at the adjacent Parkhaus.
Badenweiler is a spa village with a quiet, health-oriented character. The Roman bath ruins immediately adjacent to the facility are free to view and add historical context to the bathing experience. For those seeking hot springs near Freiburg, the Cassiopeia Therme is the closest major traditional Thermalbad to the city and one of the most architecturally distinctive in the southern Black Forest.
Suitability & Accessibility
Who Cassiopeia Therme Badenweiler Suits
Cassiopeia Therme Badenweiler suits adults, couples, and wellness travellers seeking a quiet Thermalbad experience in a historic Black Forest spa village. The facility has an adult-oriented character and the sauna, Roman-Irish bath, and wellness areas all have a minimum age of 12. Families with children are welcome in the thermal baths, though the atmosphere is calm and oriented toward therapeutic bathing rather than family recreation. The barrier-free certification makes it accessible for visitors with mobility needs.
The Roman-Irish bath is a draw for visitors wanting a structured ritual circuit through warm and hot steam rooms of increasing temperature, finishing with a cool-down phase. This circuit takes approximately 90 minutes and is available as a day package add-on to standard admission. The free aqua gymnastics sessions held daily in the Kuppelbad suit visitors who want light exercise at no extra cost.
Those seeking accessible hot springs near Freiburg with a calm, adult-focused character and historical depth will find the Cassiopeia Therme a strong option in the southern Black Forest. The Roman ruins adjacent add a cultural dimension not found at most German therme. The Therme is open daily from 9am to 10pm for the thermal baths, with the sauna and Roman-Irish bath opening from 11am. Guests with accessibility requirements should confirm current accessible routes with the facility, as renovation work may affect some internal connections between pool areas.
Safety & Etiquette
Cassiopeia Therme Badenweiler Safety Tips
Cassiopeia Therme Badenweiler is a managed facility with monitored water quality and hygiene standards conforming to German bathing law. The thermal water is an artesian spring with balanced mineral content and no unusual contraindications beyond standard thermal bathing guidance. Guests must shower before entering any pool. Visitors with cardiovascular conditions, high blood pressure, cancerous tumours, acute infections, or pregnancy should seek medical advice before using the thermal pools or the Roman-Irish bath circuit.
The Roman-Irish bath circuit involves a sequence of rooms with progressively higher temperatures, finishing with a cooling phase. Guests who feel unwell at any point should exit immediately and rest before continuing. The sauna and Roman-Irish bath areas are textile-free zones; nudity is the norm and textiles are not permitted on sauna bench surfaces. The minimum age for the sauna, Roman-Irish bath, and wellness oasis is 12. Guests should drink water before and after sauna or steam room sessions, as these environments accelerate fluid loss and the effects can be more pronounced than expected for first-time visitors.
The cold treading pool at 12 degrees is intended for short-duration circulatory stimulation and guests should build up their exposure gradually if unfamiliar with cold water immersion. Exiting the warm outdoor pool into cold air should be done slowly. Lockers are available in the changing areas. The facility is fully barrier-free and staff are available to assist guests with accessibility requirements throughout their visit.
