Jáchymov
- Location
- 51 Jáchymov, Czech Republic
- Water type
- radioactive
- Temperature
- 35 °C
- pH
- 7
Water profile
Soothing — neither hot nor cold, perfect balance.
Rich in active gases or metals — a strong mineral character.
Soft water — natural, classic buoyancy.
Jáchymov (Joachimsthal), a small spa town in the Karlovy Vary Region of Bohemia, Czech Republic, near the German border in the Ore Mountains, is the world's first radioactive radon spa, developed after the discovery of uranium ore mining in the sixteenth century — the same mines that provided Marie Curie with the pitchblende she used to discover polonium and radium. The town's radon-bearing thermal waters, rising from the uranium-mineralised granite of the Ore Mountains, have been prescribed since the early twentieth century for rheumatological, cardiovascular, and neurological conditions under strict medical supervision. Jáchymov's extraordinary scientific heritage — as the birthplace of both the word 'dollar' (from 'Joachimsthaler' coins minted from local silver) and of practical radioactivity research — makes it one of the world's most historically layered spa towns.