The construction of the Rudas Baths (Budapest, District I, Döbrentei tér 9) between 1566 and 1572 is associated with the name of the pasha of Buda Sokoli Mustafa. It was an Ilige style bath, which used thermal water. The heart of the baths is the Turkish eight-columned hall with an octagonal pool. The columns support a semi-spherical dome, which lets light into the building. The dome hall has a square floor plan with semidomes in each corner and stalactite vaults beneath them, which are tiered and typical of Turkish architecture. In the Turkish era it was known as the green-columned baths, which archaeologists believe was named after a green column which is no longer extant. There are several explanations of its current name. One is that it was named after the pole (rúd in Hungarian) to which the ferry on the Danube moored, while others think that it is derived from the name the Serbs living in the neighbourhood used for the Baths, Rudna Ilige, meaning mineral baths. The building was greatly affected by the reconstruction works started in 2004. Today there are six steam pools and a swimming pool for visitors seeking relaxation and recovery. The radioactive thermal water contains sodium, calcium, magnesium, hydrocarbonate and sulphate, and also has high fluoride ion content. It is recommended for the treatment of degenerative joint diseases, chronic and sub-acute arthritis, discus hernia, neuralgia and skeletal calcium deficiency.