You may already know this: you have probably read somewhere that Lake Hévíz is the largest in Europe. There is no doubt about that.But then, which lake would take first place worldwide? The answer is not as clear-cut as it might seem. Let's look more closely at the figures and compare these lakes as rigorously…

I invite you to compare below the total area covered by the purportedly biggest thermal spa in the world, the German Therme Erding, with the two biggest Hungarian ones; I have produced measurements for all three in order to provide a precise answer.

The use of thermal waters, on the plains of Central Europe, started two thousand years ago under Roman rule. The culture of thermalism was developed by the Hungarian people, when they arrived in the area in the IXth century.