AquaFonte lists 2 verified thermal springs in Cuba, each with its own page: temperature, minerals, treatments, and directions.
Water types found
ThermalRadioactiveBalneologySoviet ArchitectureColonial HeritageNatural
Springs
Balneario Elguea
Villa Clara Province · 47°C
Cuba's premier thermal spa resort — natural sulphurous and radon-bearing springs at 47°C in Villa Clara Province, developed during the Soviet era into the Caribbean's most medically oriented balneological complex.
San Diego de los Baños
Pinar del Río Province · 40°C
Cuba's most historically storied thermal spa — a colonial-era hill-town resort in the Sierra del Rosario whose mineral waters drew Havana society, military commanders, and eventually heads of state across three centuries of continuous use.