Rosalie, if you are going to Long Island, you really shouldn't miss Montauk. Someone once said that if you only see one lighthouse in the US it should be Montauk. Of course if you have a day to spend there are a lot more. The township with the most lighthouses in the US is there. I am partial to Cedar Island if you have an hour or so to walk out the beach and back. Bob Scroope's directions for seeing lighthouses in Suffolk county are here. Directions