A spa is a location where mineral-rich spring water (and sometimes seawater) is used to give medicinal baths. Spa towns or spa resorts (including hot springs resorts) typically offer various health treatments, which are also known as balneotherapy. The belief in the curative powers of mineral waters goes back to prehistoric times. Such practices have been popular worldwide, but are especially widespread in Europe and Japan. Day spas are also quite popular, and offer various personal care treatments.
The term is derived from the name of the town of Spa, Belgium, whose name is known back from Roman times, when the location was called Aquae Spadanae,
sometimes incorrectly connected to the Latin word spargere meaning to scatter, sprinkle or moisten.
The word spa itself denotes “fountain”. Some experts also suggest that the word “spa” originated from the name of the Belgian town named Spa where a curative natural spring was discovered in the 14th century.