One of the most prestigious and expensive estates in the United States is currently available for purchase. At 50 acres in size, it’s the largest waterfront estate in Greenwich, Connecticut, located on a private peninsula overlooking Long Island Sound. Once known as Kincraig, the home of the Lauder Greenway family beginning in the 1890s has a mile of water frontage and its own private island.

This view of the main residence from the shoreline reveals the 75-foot-long pool, manicured gardens, and surrounding swaths of nature. Daniel Milstein for Sotheby’s International Realty