It reminds me a lot of Founders Park https://www.founderspark.co.nz/ - which is only about 3km from where I work.
I find it quite theraputic to be able to walk around parts of history like this - thinking about "how things used to be".
This is a small local museum. Head east for about 20km and you get to Upper Canada Village, which is a large and well established site. Important buildings located in the areas affected by the flooding of the St Lawrence River were moved here. There are over 40 buildings, including a working flour mill and saw mill on a property that is about 25 hectares.
Another interesting thing that happened in this period is that buildings that were not considered to be worth saving were burned down by scientists from the National Research Council of Canada and the findings were incorporated into the National Building code fire safety standards.
https://www.uppercanadavillage.com/
Manfred, we have something similar in Banff NP. The construction of a hydro dam flooded a valley submerging a small town. Very popular dive site these days but the water is frigid...
https://www.banffjaspercollection.co...ke-minnewanka/