Dark Island, a prominent feature of the Saint Lawrence Seaway, is located in the lower Thousand Islands region, near Chippewa Bay. It is a part of the Town of Hammond, in St. Lawrence County, New York.
An historic landmark on the island, "The Towers", was long known as "Dark Island Castle" until recently renamed "Singer Castle". The island is situated only a few yards south of the Canada-United States border that runs along the river.
The Castle features 28 bedrooms, bathrooms, a large Drawing Room, library, and kitchen. Within the walls is a network of secret passageways that are accessible from various locations, one of which is a panel in the library that, at one time, could be opened by pulling a specific book from a nearby shelf, triggering the locking mechanism.
Wikipedia https://en.wikipedia.org/wiki/Dark_Island
Coordinates 44°27'8.009" N -75°48'44.305" E
