Castle Rock

Castle Rock, also called Cat Rock or Osborn Castle, is the estate of former Illinois Central Railroad president William H. Osborn in Garrison, New York, United States. It sits on the hill of the same name, looking down on the Hudson River 620 feet below. Visible from West Point across the river and traffic on NY 9D passing through Garrison, it has become one of the most recognizable man-made landmarks of the Hudson Highlands.The Osborn family, including paleontologist Henry Fairfield Osborn and his son, conservationist Henry Fairfield Osborn, Jr, has owned and lived in it since it was built by J. Morgan Slade in 1881 as a summer residence, although the original acreage has been subdivided considerably since then. In 1977 it was listed on the National Register of Historic Places. Most of the remaining land is now open to the public for hiking.