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Aqua Basilea Thermalbad

Rheinfelden, Aargau, Switzerland
Aqua Basilea Thermalbad
Location
Rheinfelden, Aargau, Switzerland
Water type
sodium chloride, calcium-rich
Temperature
36 °C
pH
7.3

Water profile

Thermicity
Neutral
36 °C
LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Aqua Basilea Thermalbad is a thermal mineral spa in the greater Basel region of Switzerland, where naturally occurring sodium, chloride, and sulfate-rich deep thermal groundwater is harnessed to create a mineral bathing experience in one of Switzerland's most culturally and commercially dynamic border cities. Basel, as a center of the European chemical and pharmaceutical industry as well as a renowned city of art and culture, brings a sophisticated wellness sensibility to the Aqua Basilea experience, where the naturally heated saline mineral waters are offered in a modern spa environment designed for both recreational and wellness-focused visitors. The mineral-rich waters provide the relaxation and skin comfort associated with naturally heated sodium-chloride thermal bathing within a long thermal tradition, in a contemporary wellness setting that reflects Basel's position as one of Europe's most intellectually and culturally engaged cities.

Insider tip — Aqua Basilea in Rheinfelden draws from one of Central Europe's deepest salt springs, tapping sodium-chloride brine from over 1200 meters below the Rhine valley floor. The concentrated saline waters provide exceptional buoyancy and are highly regarded for dermatological and rheumatic conditions. The facility straddles the Swiss-German border town, and guests can combine thermal bathing with a stroll through Rheinfelden's remarkably intact medieval old town. The indoor brine pool with its naturally elevated salinity gives a near-flotation experience distinct from standard thermal baths.
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Frequently asked questions

How hot is the water?
The water is neutral here, around 36 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features sodium chloride & calcium-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.