The thermal sources are montecatini’s treasure, around which have been built the real thermal resourts. There are 9 resourts whetre the treatment could be done: Excelsior, Redi, Grocco, La Salute, Leopoldne, Regina, Tamerici, Tettuccio, Torretta. The waters of montecatini’s spas are especially healing for the liver and the digestive system. The mineral water cure, that consists in drinking water, is appropriate for wide range of liver disturbances, difficulties with liver, stomac, intestines and kidneys. To the beneficient effects of the mineral water cure have to be added a relaxed life style that consists in walks in the park, an appropriate diet that all of the hotels can offer. Montecatini’s waters are saline solutions with a diversified concentration with precious natural substances like those contained in our organism (Sodium, chlorine, calcium, lithium, iodine, phosphorus) therefor the organism has no difficulties in absorbing these substances. We also do complementary therapies like mudbaths and balneotherapies. The therapy has to take more or less 3 weeks, and no less than 15 days. While the resourts are open all year long, the thermal therapy is not linked to particular seasons. To conclude we can say that Montecatini Terme is an ideal city to regenerate its own organism and to spend a relaxing and peaceful holiday.