Standing as Bethesda's premier estate offering, 6699 Macarthur Boulevard is amongst only a handful of world-class waterfront properties within the entire Capital Region. Towering over the Potomac River, old-world elegance meets contemporary luxuries in an enchanting intersection of craftsmanship and art. Designed by an all-star team of acclaimed artisans comprising architect Franck & Lohsen and master builder Leonard Nurmi of CDC Builders, the estate's nearly 12,000 square feet of interior space has been meticulously transformed by the current owner through a three-year renovation by BOWA Builders. A private road discreetly winds up to the main entrance, where motorized gates part ways to reveal a regal motor court, all nestled behind mature landscaping that keeps the home hidden from the street. Immediately, the facade's red brick, dark shutters, and turreted entrance evoke impressions of the storied country estates of the Northeast, concealing a comprehensively modern and thoughtfully designed interior. Beyond grand double doors, the sophisticated entry vestibule is flanked by a bifurcated staircase gracefully sweeping up to the upper-level landing while mesmerizing views lay ahead. Herringbone flooring is a testament to the level of craftsmanship, as are the palatially scaled and exquisitely detailed formal rooms. Striking chandeliers make a statement throughout the dramatic living spaces. In the library, a soft glow emanating from the lighted built-ins and roaring fireplace sits against a backdrop of the river below. The chef's kitchen has an oversized marble island, furniture-grade inset cabinetry, and a commercial-grade 60-inch Wolf range. Immediately adjacent, the breakfast nook's curved wall of windows enables both panoramic views and droves of natural light. Upstairs are five ensuite bedrooms, including a stunning primary suite, occupying an entire wing of the home, with sweeping views, twin marble baths, and triple dressing rooms to create a sumptuous oasis. A transverse gallery spans the entire width of the lower level, whose centerpiece is a circular wine cellar reminiscent of a hidden Tuscan grotto. A chic bar, representative of the trendiest metropolitan restaurants across the globe, anchors the recreation room, while a fitness center, billiards room, guest suite, and laundry facilities complete the lower level. Every inch of the rear lawn is as exquisitely finished as the interiors. A full-width upper terrace gracefully descends to the lower terrace and its focal point - an infinity pool and bubbling hot tub whose edge seemingly vanishes into the expanse beyond. An English garden perfectly complements the historical essence of the home's exterior. Irreplaceable like the world's rarest collectibles, 6699 Macarthur Boulevard is truly like no other.