What is SPA

The term spa is associated with water treatment which is also known as balneotherapy. SPA towns or spa resorts (including hot springs resorts) typically offer various health treatments. 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.

Many people around the world believed that bathing in a particular spring, well, or river resulted in physical and spiritual purification. Forms of ritual purification existed among the native Americans, Persians, Babylonians, Egyptians, Greeks, and Romans. Today, ritual purification through water can be found in the religious ceremonies of Jews, Muslims, Christians, Buddhists, and Hindus. These ceremonies reflect the ancient belief in the healing and purifying properties of water. Complex bathing rituals were also practiced in ancient Egypt, in pre-historic cities of the Indus Valley, and in Aegean civilizations. Most often these ancient people did little building construction around the water, and what they did construct was very temporary in nature.

Up until recently, the public bathing industry in the U.S. remained stagnant. Nevertheless, in Europe, therapeutic baths have always been very popular, and remain so today. The same is true in Japan, where the traditional hot springs baths, known as onsen, always attracted plenty of visitors.

But also in the U.S., with the increasing focus on health and wellness, such treatments are again becoming popular.

source: http://en.wikipedia.org/wiki/Spa