Rudas Bath or Rudas fürdő is a thermal bath in Budapest, Hungary which is claimed to have medicinal properties. It was founded in 1571/1572 during the time of Ottoman rule. To date, it retains many of the key elements of a Hammam, exemplified by its Ottoman dome and octagonal pool. It is located at Döbrentei tér 9 on the Buda side of Erzsébet Bridge. The bath has six therapy pools and one swimming pool where the temperature is in between 10 and 42 °C. The components of slightly radioactive thermal water includes sulfate, calcium, magnesium, bicarbonate and a significant amount of fluoride ion. A sight-seeing brochure claims the water can help to treat degenerative joint illnesses, chronic and sub-acute joint inflammations, vertebral disk problems, neuralgia and lack of calcium in the bone system.