The following is a fun hide right by the north-west trail leading to what was the country estate of Edwards Roger Woods' Glendon Hall (1924), which became York University's Glendon Campus and was the original York university campus. (More cache information is below*)
I've come to know this park well by walking these trails for years as a kid, always with my mum showing me around, going to Edwards Gardens (another masterfully designed property, completed in '52) or just around toward E.T. Seton Park, usually through the hospital route which is the easiest way to get to this cache, whether by walking or by car. The park system is one of the few substantial park spaces in the city through which we owe thanks to those who previously owned the land. Originally owned by the Burke family, this tract of land changed hands to the Kilgours in 1909, which isn't all that long ago, but created a lasting impact in the community.

(Caption from a September 13th 1928 article "Toronto receives officially splendid gift of park")
"Kilgour estate changes hands. Toronto to-day officially receives the finest gift of land ever made to it for park purposes--175 acres on the Don north of Leaside--the donor being Mrs. Kilgour, acting on behalf of her husband, the late Joseph Kilgour. This expanse of farm and park land is worth about $550,000. It is somewhat larger than the original Howard High Park gift which was 165 acres, though subsequent additions have bought the extent of High Park to 335 acres. With the Kilgour gift go numerous buildings, shown in the cut above. Built in a hollow cup of the hills they include a huge riding arene where the sixty thoroughbred hunters belonging to the famous Sunnybrook stables used to be exercised over the jumps in winter weather. A second large model cow stable used to house forty head of prize cattle. Mrs. Kilgour, breaking her rule against publicity just for once, is shown below, with a map showing how to get to the park, which will remain to future Toronto as a memorial to her husband."

"The Toronto Hunt Club visit Joseph Kilgour's new stables in Sunnybrook Farm" (1912)

The same stables 32 years later, also showing the neighbouring stables for cattle in the background (1944)
The cache is a standard DreamMachine hide, and I must say, if you don't have thin fingers, you will want to bring a screwdriver to undo the lid of this cache...or find another way to get the log out without damaging the container.
Keep in mind the trail is closeby, so although you won't need to be stealthy per se, you will need to be....a bit diligent. During the summer, it's easier to blend in and look less suspicious. BYOP as well, and beware, this tree isn't the kindest.
Congrats to clues-uh on the speedy, early morning FTF