<s>[INST] I want to travel to the northeastern part of the United States in the fall to see the foliage. I'm interested in visiting the big cities, but I also want to enjoy the beautiful fall scenery. Here are some options I'm considering:

- Acadia National Park, ME
- White Mountain National Forest, NH
- The Green Mountains, VT
- The Adirondacks, NY
- The Pocono Mountains, PA

Each of these destinations offers stunning fall foliage. However, I also want to visit some of the bigger cities in the region. I'm considering visiting:

- Boston, MA
- New York City, NY
- Philadelphia, PA

My trip will be approximately 12 days long. What would be a good itinerary for my trip?[/INST]