"Riven Oaks," designed by renowned architect James Brown Lord for Miss Mary LeRoy King circa 1900, is one of the great surviving estates of Tuxedo Park and is listed on the National Register of Historic Places. Later owned by Eben Richards, son-in-law of railroad industrialist Henry Clay Pierce, the estate represents a rare opportunity to restore and reimagine an important work of American Gilded Age architecture. Set atop the prestigious Tower Hill section of historic, gate-guarded Tuxedo Park, this extraordinary estate commands expansive views across its private, elevated grounds. Encompassing approximately 9,000 to 11,000 square feet, depending on a future owner's vision, the residence retains a remarkable collection of original architectural details, including grand proportions, soaring ceilings, extensive millwork, original flooring, fireplace mantels, wall paneling, and numerous fireplaces throughout. Designed in the Classical Revival style, James Brown Lord's imposing composition is distinguished by its monumental scale, richly articulated curved pediment, and dramatic Corinthian pilasters, establishing Riven Oaks as one of the most architecturally significant residences within Tuxedo Park. Historic terraced lawns and stone gardens further enhance the estate's extraordinary setting. After years of careful historical research and planning, Riven Oaks is now prepared for its next chapter. The property presents a true restoration opportunity, allowing a future steward to create a world-class private estate with flexibility for five to nine bedrooms, extensive guest accommodations, offices, wellness spaces, and modern amenities, all within the framework of one of America's most storied gated communities. An existing elevator serves the residence. Founded by Pierre Lorillard IV in 1885, Tuxedo Park is widely recognized as America's first planned gated community. Today, it remains one of the country's most exclusive and architecturally important enclaves, offering 24-hour gate security, private lakes, swimming, boating, fishing, cycling, and miles of scenic hiking trails, all approximately one hour from Midtown Manhattan. A once-in-a-generation opportunity to restore one of the Hudson Valley's most important historic estates.