Never been to PA but would love to.
I used to work for Delta in Dublin so got to a few places- St. Augustine, FL, Breckenridge, CO, San Francisco and all down the west coast (my honeymoon!), Las Vegas and the Grand Canyon, Dayton OH (my Mam has a cousin there so I went with her), New Orleans, Boston lots of times, NYC lots of times, a college summer in NH, another college summer in NY in the Hamptons (and it was wasted on me then - how I'd love to go there now!!) and two family holidays in New England in 2006 and 2007. You could say I love the USA!!!
My next plan is to go to the Carolinas - I really regret not going when I was in Delta cos they're expensive to get to. Anyway it'll be a few years before I get there.