I think your right the queen does own a fair bit of land and actually, The Queen of Canada (and head of state) has been Elizabeth II since 6 February 1952.
Although the person of the sovereign is shared with
14 other independent countries within the Commonwealth of Nations, each country's monarchy is separate and legally distinct.
If he visited the UK that could be anywhere from Australia to your one-horse town. Right? Grrrr.
We have several horses appearing in our town from time to time as there is an important racecourse within walking distance. In fact on the 7 furlong sprint I can see the race start from my garden.
I also get to watch the owners and Jockeys arrive by helicopter and light aircraft as there is a landing strip on the racecourse.
However, there are public houses in the area. Which if you where to enter, with two ears and your nose intact you would be considered a sissy.