Heviz - the biggest thermal lake in Europe, Hungary

The Heviz Lake is a geological curiosity, Europe's largest thermal lake - a warm water lake situated in a peat-bed. The 4.44 ha water-surface lake is surrounded by a 60.5 ha nature conservation area. Springs of different temperatures diffuse in a narrow cave, and became a constant (38,5 °C) temperature stream when entering the lake. Beautiful water lilies, brought to Hungary at the end of the 19th century, dot the lake, supporting the eco-life, with leaves slowing down evaporation, and creepers protecting the medicinal mud on the bottom of the lake.