Lake Hévíz Lake Hévíz Lake Hévíz is located in Hévíz, Hungary, near the western end of Lake Balaton, from Keszthely. It is the largest thermal lake in the world, which is available to bath ( in area). The flow of water is very strong and the water in the lake is completely replenished every 72 hours. The fauna and flora are unique in Lake Hévíz due to the temperature and chemical composition of the water, contains carbonic acid, calcium, magnesium, hydrogen carbonate, reduced sulfuric compounds as well as oxygen in solution. Several species so far can be found only in this lake.
Lake Keitele Lake Keitele Keitele is a rather large lake located in Central Finland. With the area of 493.59 km² it is the 9th largest lake in the country. The lake is divided into three regions, Ylä-, Keski-, and Ala-Keitele, of which Keski-Keitele is the largest. Water in the lake is clear and in excellent condition. The towns of Äänekoski and Viitasaari are located on the shores of Keitele. The northernmost part of the lake is called Ylä-Keitele. A big part of Ylä-Keitele belongs to Natura 2000 protection program due to its clear water and natural condition. A leading figure in modern