About 50 miles north of New York City, there is a small, rocky island named Pollepel. On it stands what appears to be a crumbling Scottish castle. This is the remnant of a Scotsman’s fortress called Bannerman Castle, built not as a home, but as an arsenal for his immense collection of weapons. Bannerman Castle and Pollepel Island are closed to the public and accessible only through tours arranged by the Bannerman Castle Trust. Do not attempt to land on the island or enter the harbor surrounding the Island.