GregLeg, we're practically neighbors! I'm down the hill in Regent Square!
millrace, depending on which location you are coming from, my recommendations are Morain State Park, Cooks Forest or McConnell's Mills (all north of the city) there also is Conneaut Lake which has it's own little amusement park with a wonderful classic woodie, which is about a 90 minute drive from Pittsburgh. Or southeast of the city, is Ohiopyle and the Laurel Highlands. If you go to experiencepa.com, they have some helpful resources.
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Neil
Pittsburgh, PA