In 2011 , the UNESCO declared it a World Heritage site and it is truly humbling and impressing.
It's museum explains how they were built and actually demonstrate the process.
Built from wood and reeds, the houses then were clad with clay to give them shelter from the elements. Some houses were equipped with what the archaeologists think people had in those days: a weavers cottage, a tinker's, a fisherman's. All had the same fireplace in common. It was marvelous to see how clear the lake was. In places it was so shallow you could see the ground among he reeds, elsewhere they were put into deeper water.You'll find more information here in this video.