Think about Venice as being a city built on/near water

Venice Backstage. How does Venice work? from Insula spa on Vimeo.

At minute 11:55, notice the information about driving tree trunks into the ground to support the weight of the buildings in the marshy ground....
There is more information about Venice and its buildings at Venice Backstage.

Do you think the Alpenblick lake-dwellers had the same problems with water as the Venetians have today?