The organization of the village, as seen at Clairvaux II in the 35th century, with the house gables facing the lake, is identical to villages in western Switzerland.

Northwest of the Alps, two different concepts of village organization came into contact with each other.

On the other hand, in northwest Switzerland at the same period, villages were laid out quite differently, with houses whose central axis ran parallel to the shore. These constructions are arranged on either side of a central street, which runs perpendicular to the shore.

These two designs highlight the differences between two cultural groups with different traditions : Cortaillod in the south, of southern origin and still disposed towards a nomadic form of agriculture, and Pfyn in the north, which became sedentary much earlier.