We had a fabulous fortnight in Boston and Cape Cod last year. It was perfect for us, and just adventurous enough for our 8 and 6 year old. I'm tempted to go the US again this year, but I only really know New England and don't know where else to try. We don't fancy Disney or anything like that and simple (ish) self-catering cabins/ cottages work best for us. We love interesting cities, a bit of history, big beaches, lakes and mountains.
I'm wondering about Washington and Virginia or The Carolinas, although a Canadian friend suggested Vancouver and Vancouver Island. I'd love to go up to the wilder National Parks in Maine, but I think the kids might find it a bit dull and there's nothing more depressing than going in search of deep peace, only to be serenaded by whinging offspring.
Any ideas/ experiences would be gratefully considered. Happy to consider anything really. I love planning holidays!