Grange Park used to be my "short cut" to Scotiabank Theatre backed when I lived close to UofT and it's always a joy to walk across, a nice haven right behind the old AGO building that is a dog lovers delight to walk by especially on a sunny day out.
Dogs, people practicing tai chi, playing frisbee, lounging or passed out on the benches (depending on your time of visit) are all common sights here and lots of kids in the playground area, so pretty much your typical park on a small scale. But the Grange does have the unique distinction of having a staircase that seems to hang over it thanks to the AGO.
Yes it's a little sketchy to walk in after night falls especially the "neck" on the south end if there are homeless or shifty eyed persons occupying benches on both sides, but I have yet to run in to any problems and I walk through it quite often at night after a movie by myself.
They do have a labyrinth painted sort at the merging of the paths and I have given up trying to find a pleasing way of navigating through it.