ThermaeExplore the map →

Carbonated hot springs

204 carbonated-water places mapped worldwide. Find where to soak — and where to stay nearby.

Hotels in Japan →See the springs ↓

What is carbonated water?

Contains dissolved Carbon Dioxide (CO₂) (>1g/L). The fine bubbles settle on the skin and give a sparkling tingle followed by a sensation of warmth.

Called the "Blood Bath" in Europe for the skin redness it causes.

pH
Acidic (due to CO2)
Family
Gas
Element
CO₂ · CO₂ libre
Origin
Volcanism
Best for
Sparkling sensation & warmth
Temperature
Often low (CO2 evaporates with heat)

What it feels like

Dissolved CO2 forms fine bubbles on the skin, the source of the sparkling tingle and the feeling of warmth after the bath.

Sensations & traditions

Did you know — The CO2 bubbles redden the skin and give an intense feeling of warmth after the bath, even if the water is lukewarm.
Good to know — None major.

Wellness and cultural information — no therapeutic claims. If in doubt, ask a healthcare professional.

Stay near the springs — compare thermal hotels and stays.

Find a hotel →

204 carbonated springs to explore

Frequently asked questions

What is carbonated water?
Contains dissolved Carbon Dioxide (CO₂) (>1g/L). The fine bubbles settle on the skin and give a sparkling tingle followed by a sensation of warmth. Called the "Blood Bath" in Europe for the skin redness it causes.
What does a carbonated-water bath feel like?
Sparkling tingle of the bubbles. Feeling of warmth after the bath. Sparkling waters of tradition.
Where can I find carbonated hot springs?
Thermae lists 204 carbonated-water places worldwide, including Nagayu Onsen (Japan), Kogane Onsen (Japan), Royat (France). Explore the map to filter them by country and destination.
Are there any precautions with carbonated water?
None major. Wellness and cultural information — no therapeutic claims. If in doubt, ask a healthcare professional.

Explore by country

Japan 4666Turkey 959United States 565China 464France 442Italy 422Germany 383Spain 352Hungary 161Indonesia 147Mexico 134Chile 130Greece 119India 119Peru 116Taiwan 100Austria 97Brazil 96South Korea 95Iceland 93Portugal 91Thailand 85Romania 80Switzerland 74