In Western PA (my home stomping grounds), any of the state parks is worth a visit. Autumn here is amazing, but just about any time of year will lead to good photographic possibilities. My current favorite is Moraine State Park. Try to get to the South entrance at opening time in the mornings for some great sunrise shots over the lake (assuming that the sunrise is a good one). You'll have enough time to drive up into the park, down to the lake, get set up, and wait for the light.
Depending on how much hiking you're willing to do and what specific subjects you're looking for, you can find incredible views all over the Northeastern US. I've been spending time recently shooting 8x10 B&W shots of old glacial rocks, lakes, and dead wood.