Anchored along the Potomac River on over 13 private acres, this magnificent French Chateau-inspired estate exemplifies the pinnacle of architectural refinement and luxurious living. Approached by a half-mile tree-lined drive beyond an arched gate, the residence unveils breathtaking panoramas of the river and protected parkland. A masterful collaboration between architect John Ike, designer Geoffrey Bradfield, and Horizon Builders, this limestone and slate masterpiece comprises over 40,000 square feet across three meticulously crafted structures. The 25,000-square-foot main residence features coffered ceilings, floor-to-ceiling windows, and imported stone detailing throughout four levels. The entertainment-grade lower level showcases a professional theater, clubroom with magnificent bar, and wine cellar rivaling the finest restaurants. A thoughtfully designed three-level guesthouse with 11 garage bays transforms effortlessly from automotive showroom to glamorous event space, while a 4,500-square-foot staff residence ensures seamless property management. Every amenity speaks to uncompromising luxury—commercial chef's kitchen, elevator access, heated pool, generator backup, automated snow-melt systems, and reverse osmosis water throughout. Remarkably, sale proceeds benefit The American Cancer Society, making this acquisition an extraordinary legacy opportunity. Property and opportunity details provided by seller or others; buyer to verify.