Nestled near the western edge of Lake Balaton, the town of Hévíz—meaning “warm water”—is renowned for its natural hot springs. Visitors can enjoy a unique experience at the world’s largest biologically active thermal water lake. This site has historical significance, with archaeologists discovering healing sacrificial medals from Roman times and legends stating that the future Roman Emperor Flavius Theodosius was healed of paralysis here as a child. Modern bath culture in Hévíz began in the 18th century, notably when Count György Festetics constructed a raft-supported bath while the region was under the Festetics family’s influence.
The lake itself, estimated to be tens of thousands of years old, reaches a depth of 38 meters and covers an area of 4.4 hectares, alongside a surrounding 50-hectare forest that contributes to its ecological balance. This lush forest is vital to the lake’s environmental system and enhances the therapeutic experience offered by its waters. The biologically rich lake is utilized for rehabilitation following orthopedic surgeries, relief from gout, and general health maintenance.
Remarkably, the lake’s water is naturally replenished every 3.5 days. Oval in shape, it is nourished by both hot and cold springs. In summer, temperatures range from 33 to 38 degrees Celsius, while in winter, they typically remain above 22-23 degrees Celsius, enabling comfortable swimming even during cold weather. On chilly days, a thick layer of steam often blankets the surface, creating a truly enchanting atmosphere.