All-season resort of national importance, with sulphurous, chlorided, slightly iodinated, brominated, sodic, calcic, magnesian mineral waters of various concentrations (oligomineral, hypotonic, isotonic, hypertonic) known from the 18th century. The first chemical tests of these mineral waters were made back in 1830. In 1873 these mineral waters got the gold medal at the International Exhibition in Vienna. The mineral waters of the over 30 springs at Baile Olanesti are recommended in internal cure for the treatment of:
- chronic diseases of the kidneys and urinary system (kidney lithiasis, chronic pyelonephritis, chronic glomerulonephritis),
- the alimentary canal (hypoacid gastritis, biliary dyskinesis, chronic cholecystitis, chronic hepatitis, etc.),
- metabolic and nutrition disorders (diabetes melitus, obesity, etc.),
- respiratory (microbial or viral pneumopathy, allergic asthma, bronchitis, etc.),
- dermatological (incipient ichthysis, chronic eczema and rush, neurodermatitis, acne, etc.)
- otorhynolaryngological diseases (laryngitis, nazal and sinusal allergy),
- associated diseases (degenerative and abarticular rheumatic troubles, asthenic neurosis, endocrine disorders, etc.).

The resort provides installations for warm baths with mineral waters in tubs, for electrotherapy and hydrotherapy, gyms, etc. There are 24 fountains (springs) for drinking mineral water.