The population hubs in Pennsylvania are Philadelphia and Pittsburgh, located at the eastern and western ends of the state, respectively. Pittsburgh, located where the Allegheny and Monongahela rivers form the Ohio River, is America's renaissance city. Pennsylvania's northern tier represents the state's great outdoors. Hiking, fishing, hunting, swimming, camping, and winter sports are all enjoyed from the miles of beaches along the Lake Erie shoreline to the Pacini Mountains. (Courtesy of Rand McNally http://www.randmcnally.com)