Now in its third year, the Pittsburgh County Fair — taking place Sat., Sept. 13 at Allegheny Commons Park West — promises a free, all-ages affair full of “hands-on demonstrations,” contests, appearances by local farms, and “sustainability-focused artisans,” as well as line dancing hosted by 412 Step, live music, and local food and drinks, including beer from Allegheny City Brewery. Pittsburgh residents don’t have to travel to the Big Butler Fair for farm animals, prize-winning p...