Rudas Bath or Rudas fürdő is a thermal and medicinal bath in Budapest, Hungary. It was first built in 1550, during the time of Ottoman rule. To date, it retains many of the key elements of a Turkish bath, exemplified by its Turkish 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 16-42C. The components of slightly radioactive thermal water includes sulphate, calcium, magnesium, bicarbonate and a significant amount of fluoride ion.