My favorite place has always been my Grandmother's house. I'm sure it's no longer there now but I have fond memories of spending several weeks there every summer.
It was a farm house on a tobacco farm in Rocky Mount, NC. Her driveway was about 1/2 mile long cut straight through a field of tobacco!
I could write a book about all the fun we had there. I would love to go back. Just wish I could.
I've heard Vermont is nice, too