Here is the Fallout Wiki page for New York. For those that don't know Emil Pagliarulo did an interview with NoClip where he said that New York was a planned location for Fallout 4 and that he still has design documents for a game set there.

I think Fort Montgomery/Fort Blunder could be neat. They were built between 1844 and 1871 on the US-Canada border after the war of 1812. Construction stopped and the first fort was abandoned after they realized, due to a surveying error, they were actually building it within Canada's borders. Given Canada's annexation in the Fallout universe I think it would be humorous to see this place presented by the US as a glorified symbol of Canada's annexation.