These buildings in Northern Europe are around 200 to 300 years old yet they have their first floor covered by few meters of dirt and clay. This build up can be seen as far as Texas and Canada. This suggests that something happened that created this to build up some kind of massive mud flood the cause of which is still being debated. This should have been broken by National Geographic years ago but Rupert Murdock has insured that they will completely ignore anything that contradicts the official narrative.
In Cambridge UK there is 0 evidence of this – the college buildings are all above ground and have been for the last 500 years. Central and southern Europe is largely unaffected by this other than a slight rise in the water table.
Venice wasn’t always a canal city.