From the birthplace of America to Revolutionary War sites to significant modern day memorials, Discoveries America explores this country's rich beginnings in historic Pennsylvania. "We hold these Truths to be self-evident, that all Men are created equa l ..." Featured parks include: Independence Hall National Historical Park & UNESCO World Heritage Site, Liberty Bell, Gettysburg National Military Park, Valley Forge National Historical Park, Flight 93 National Memorial, Johnstown Flood National Memorial, Hopewell Furnace National Historic Site, Thaddeus Kosciuszko National Memorial, Eisenhower National Historic Site, Friendship Hill National Historic Site, Gloria Dei Church National Historic Site, Fort Necessity National Battlefield, Edgar Allan Poe National Historic Site, Delaware Water Gap National Recreation Area, Allegheny Portage Railroad National Historic Site, Steamtown National Historic Site.