Bannerman Island, also called Pollepel Island, is located in the Hudson River near Cornwall, New York. It is the site of Bannerman Castle, which was once a weapons arsenal and ammunition depot, but which suffered a major explosion in 1920, leaving only the shell of the castle standing. The island is open to the public via organized tours. Beacon, New York is the embarkation point for the ferry boat that takes you to the island for the tour. The boat trip takes about thirty minutes, and is a pleasant ride, especially on a hot summer day like the one on which we had booked our tour. I'd been wanting to visit the island for several years now, and on this trip to New York it became possible for Maria, Jean and me to do so. Visitors are not allowed to walk around the castle ruins as the structure is too unstable and is currently being held up by large supports, but the rest of the island is open for exploration. We enjoyed the tour and can recommend visiting the island.