it's funny to see dozens of examples of european castles (buildings with tens of rooms and bathrooms, plus huge gardens) whose cost is in the same ballpark as 2 or 3 bedroom houses in random (but well [sub]urbanized) parts of Canada
Castles are a bit of a scam. The old aristocratic families that still own them, e.g. in Germany, tend to have a state subsidy for maintainance. If you didn't have the luck of being born into those families, you get all of the joys of Medieval engineering twinned to modern historic preservation bureuacracy.
the canadian properties are in some cases less than 100 square meters, getting compared with land properties of square kilometer scales!
the discrepancies in land value are artificial and are part of the global inequality crisis
but on the global scale the inequality is not between individuals, but between cities and states (and countries)