There are many more national parks and site in New England than you might think (you're thinking Acadia in Maine and Cape Cod National Seashore, right?).
People over age 62 can get a Lifetime Senior Pass for only $10 ... now. That price jumps to $80 on August 28. (also on that date, the National Park Service will be selling Annual Senior Passes for $20).
If you love visiting the national parks, get your Lifetime Pass now.
Find a full list of national parks and site in the United States, listed by state.