Hart House is on the west side of Queen's Park, just north of Wellesley Street and one building south of Hoskin Avenue. If you are driving from far away, take the Gardiner Expressway to the york Street exit, head north on York until it forks left to University Avenue, drive north on University until it forks right into Queen's Park Crescent, turn left at the light at Wellesley Street, drive under the bridge and ask the attendant to point out Hart House on your right. You can park on King's College Circle (150 spaces) or Hart House circle (73 spaces) after paying the attendant, or on Tower Road (a few dozen spacesA) behind Hart House. Parking on campus is $4.50 (flat rate) all day Saturday; the machine on Tower Road takes only $1 and $0.25 coins, but the attendant can make change. One-hour metered parking is available on Hoskin, the nearest large parking lots are on St. George north of Hoskin and on Bedford Road just north of Bloor Street (each a ten minute walk away).
An excellent alternative is the subway ($2 cash fare). Get off at Museum station, exit on the west side of the station, walk south toward and around Queen's Park, crossing no streets other than Hoskin Avenue. Just before you get to the bridge over Wellesly Street, turn right onto a walkway and Hart House will be right in front of you.