A long stone bridge leads to the pentagonal building of Nádasdy Castle (1 Várkerület), once surrounded by a moat. The castle served as a fortress and a residence for an aristocratic family. The Nádasdy Ferenc Museum, displaying a rich collection of applied art and housing exhibitions that detail the life of Hungarian Hussars and the interwoven history of the city and the castle, is one of the country's most beautiful museums, due to its lavish interior décor and valuable furnishings. The saline water of the Thermal Baths (1 Vadkerti utca) is used to treat rheumatic diseases, post-fractural complaints and gynaecological disorders. It also facilitates general recuperation and improves overall physical condition. Its use is recommended either in the form of therapeutic treatment or self-cure in the home, using bath salt, called 'Sárvár thermal crystal', distilled from the water.