Hévíz is a spa town in Zala County, Hungary, about from Keszthely. Description of the lake The town is located near Lake Hévíz, the world’s second-largest thermal lake, but biologically the biggest active natural lake. Its temperature is affected by the combination of hot and cold spring waters, coming from 38 meters underground. The water breaks out from a spring cave, at approximately 410 liters per second, with a temperature of . The biological stability of the lake is shown by the temperature of the water, which has not changed for years and even on the coldest winter days doesn’t drop below . That makes bathing possible in the lake year round. In the summer, the water temperature can reach . History The lake's healing properties have been well known for centuries by people who lived here, as far back as the end of the Stone Age. The foundation of bath culture was laid by the Romans in the 2nd century. The city and the bath began developing significantly in the 18th century, related to the Festetics family, who started scientific research about using the water for healing. Attractions to the city The city provides facilities for visitors seeking to use the medicinal waters of the lake, including entertainment, hotels, parks, and sports. Dr. Schulhof Vilmos Promenade Pedestrian Zone Building of the City-hall Church from the Arpadian age Heart of Jesus church Holy Spirit Catholic Church Calvinist church Art Cinema Local collections - museum Cafeterias Egregy Wine Cellars Museum of Egregy Tomb of the Roman soldier Roman ruin garden Farmers' market of Hévíz Calvary in Egregy Water lily nauter trail and treetop walkway See also Hévíz Spa Lake Hévíz Sármellék International Airport, aka Hévíz-Balaton Airport Gallery References External links Official site Hévíz Virtual Tour, Hévíz Video Portal Hévíz Hévíz at funiq.hu Populated places in Zala County Spa towns in Hungary