I’m thinking of Madison Square Garden (sg.) Boston Gardens, and Maple Leafs Gardens, to be exact. A garden, as best I know in modern usage, is a thing of dirt where you grow flowers and veggies 'n junk. Very technical and precise definition, I know.
However, having done a bit of sleuthing, I notice that the origin of the word is referring to the “enclosure: it is from Middle English gardin, from Anglo-French gardin, jardin, of Germanic origin; akin to Old High German gard, gart, an enclosure or compound, as in Stuttgart. See Grad (Slavic settlement) for more complete etymology.  The words yard, court, and Latin hortus (meaning “garden,” hence horticulture and orchard), are cognates—all referring to an enclosed space.[wikipedia:garden]”
My question: between 1879 (opening of the first MSG), and say, the Middle Ages, is there a consistent usage of “Gardens” in this non-botanical sense, or did re-emerge out of nowhere in the nineteenth century? The closest I can think of is the Vauxhall Gardens in Britain, but those legitimately had trees and shrubs and greenery.
Thanks in advance to anyone who would like to tackle this etymological enigma!