| Austria |
Bad Gastein, Bad Hofgastein, Bad Zell, Gasteiner Heilstollen |
| Bulgaria |
Hisarja |
| Czech Republic |
Jáchymov |
| Chile |
Jahucl Hot Springs |
| China |
Nanshui, Taishan |
| France |
Plombiers |
| Germany |
Bad Brambach, Bad Kreuznach, Bad Münster am Stein, Bad Schlema, Bad Steben, Sibyllenbad, Menzenschwand St. Blasien, Weissenstadt |
| Greece |
Ikaria, Polichnitos, Eftalou |
| Hungary |
Abaliget Cave, Budapest, Beke Cave, Eger, lstván Cave, Tapolca Hospital Cave, Szemlöhegy Cave |
| Italy |
Ischia, Meran |
| Japan |
Misasa |
| Poland |
Długopole-Zdrój, Ladek-Zdrój, Świeradów-Zdrój, Szczawno-Zdrój, Przerzeczyn-Zdrój |
| Romania |
Felix Spa |
| Russia |
Pyatigorsk (Caucasus). Belokuriha (Altai, Siberia) and Yangan Tau (Ural) |
| Ukraine |
Khmelnik |
| USA |
Boulder (Montana) |
