From a city of smokestacks to a city of culture, technology, and trees, Pittsburgh's revitalized city parks, abundant state parks, tranquil state forests, and enhanced riverfronts offer endless opportunities to hike and explore. "60 Hikes within 60 Miles: Pittsburgh" has something for explorers of every ability and interest. Diverse hikes include Frick Park, which can be combined with a visit to the Frick Art and Historical Center (free); Ohiopyle State Park, with views of the beautiful Youghiogheny River and Cucumber Falls; Beechwood Farms, where kids and adults can opt to participate in...