Journey back in time through cobbled streets of Philadelphia and uncover a wealth of national treasures – the Liberty Bell, Independence Hall and the U.S. Constitution to name a few. Nearby, Valley Forge puts the American Revolution into context at the National Center for American Revolution and Gettysburg is an important historical shrine. Visit an artist's studio in the woods where Wharton Esherick, an important American artist and sculptor worked with wood - the studio he built is now a museum for his creations. Take a ride down scenic back roads through Covered Bridges and past Painted Barns ("advertising barns"), which tell their own stories about early America. Pittsburgh, a city once known for pollution, has changed direction and is becoming one of the cleanest cities in America. Go inside their new convention center to see what makes a building 'green.' Meet hundreds of rare, exotic birds at the National Aviary. Farming is a way of life and agriculture is still the most important industry in the state. Modern dairy farmers tend to hundreds of acres of crops with huge harvesting equipment while their Amish neighbors perform the same tasks the old fashioned way - using only horses and mules.
