Castle Rock Own a piece of American history. This iconic stone castle is one of the most recognizable man-made landmarks of the Hudson Highlands. Set 620 feet above the Hudson River with panoramic views north and south and across the river to West Point, it s a breathtaking setting. Originally constructed in 1881 as a summer home for William H. Osborn, president of the Illinois Central Railroad, and not offered to the market for over 45 years, it s ready to be restored to its original glory. Built in the classic style of a picture-book castle, and constructed of rough-cut stone with red slate conical roofed towers and dormers, it s complemented with porches and verandas on each side of the building. The immediately recognized, irreplaceable facade and once-magnificent grounds are poised to create an estate of unparalleled proportions. With over 15 acres and adjacent to a 100-acre preserve of forever-protected woodlands with hiking trails, it offers year-round outdoor recreation less than an hour s drive to NYC.