When I was searching around Guelph I came across David Hastings Stadium. The outline of the field reminded me of Polo Grounds, so I brought in some of the aspects of it, including the high walls in the corners. Since it is in a park I kept it at ground level and gave the fenced walls in the outfield so the public can wander by and take in the game.
The park is pretty massive - 420 to the corners in the outfield - so it creates a lot of space for doubles. It plays a bit more lefty friendly than righty friendly, but oddly is pretty neutral for a Canadian field.
New zip file can be found here
Original Zip File can be found here
Park Factors
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Night