Fort Ticonderoga, on the border of NY and VT. about half day is enough time. It puts you close to Lake George, which is a great destination lake in NY. Lake Placide, just north west of Lake George is a former Olympic site, still has some of the Olympic buildings, and again is a destination area. There are a number of NY state parks in the area that are part of the Adirondacks, if outdoor activities are your preference.
Dropping into Maine is an option. Lots to do and see in Acadia National Park/Bar Harbor area. There was just a post about this area yesterday.
Jaskson, NH is a nice area with the White Mountains/Mt. Washington, enough to do and see for a couple of days.
Just into VT from Fort Ticonderoga area is Ben & Jerry's factor, Vermont Teddy Bear Factory, Van Trapp Lodge.
Hope this gives you some things to look up and decide what is of interest to you.
Happy Trails!
Good Sam Life Members. Camping with two young children in a 2007 Pilgrim fifth wheel (278BHSS) pulled with a 2002 F350.