W. K. Lis
Superstar
Taddle Creek misses Queen's Park, but is just west of the roadway. Unfortunately, the creek is currently used as a sewer.
It looks similar to the Spadina station walkway, except narrower, dimly lit, and not as busy.
Wikipedia says there's a tunnel between Whitney and the Legislative building itself. I can't comment on a tunnel that I've never seen or does not exist.
In terms of access, as far as I know, unless it's under lock-down because of protest or a budget or something like that, the public is allowed to access MacDonald block even though there isn't any real reason for people to go there any more. I do remember kids from the school across the street going to the cafeteria there as well. From there, you could go downstairs to the tunnel and get to QP station and say hi to the person at the desk at the other end. I would bet cash money that if you said to the person at the subway side that you had a meeting or other reasonable reason to go through the tunnel, they'd let you. Or even just didn't look like you didn't belong.
Well, who knows if there may be an argument for a Women's College connection (unless the tunnel's provincial-propertiness conspires against that--though who knows; maybe some clever sleight-of-hand connection to MaRS is worth considering, thus extending the "hospital mini-PATH")
Something that dawned on me: you can blame the Frost Building addition, above all, for the tunnel connection--it's more or less contemporary with the University line, and the tunnel's floor'n'wall-tile aesthetic shares something of Frost's early 60s "neo-formalist" sensibility. (IOW MacDonald was a later "add-on"--and you can tell we've entered the late 60s because the Frost-era tile gives way to service-basement concrete utilitarianism.)
It exists. I remember it from the pre-Harris days when it was actually open to the public. (Though I'm not sure whether it's original to the Whitney construction--perhaps; makes sense. )
a PATH-North would be a great addition; MaRS to MacDonald Block to College Park. while we're at it might as well create shopping plazas under the hospitals.