The most interesting underlying story of this garden though is in its creation, for it's built on an area of ancient glacial lake beaches, composed entirely of flat worn, rounded rocks, several metres deep apparently. To hear the gardeners explain it, there was virtually no actual soil; they learned quickly to dig holes among the loose old beach rocks, add soil, and plant things in the holes. Today they are left with the small beach rocks as mulch throughout the garden - the most unique mulch I've ever seen. And there seems to be very little weeding problem. And of course there are lots of rocks at hand for those walls, paths, and edging. Look closely at the foreground of the photo above and you'll see the small stones that compose the 'soil'.
Tomorrow (that's later today now, 'cause I'm so delayed), the 'Keppel Henge', the 'Analemmatic Sundial' and the 'Skipping Stone Capital of Canada'.