With all the grace and charm of an enchanting French Chateau, this magnificent brick mansion, with its slate roof and several turrets, stands majestically on 4 tranquil and mesmerizing acres in the heart of what was once part the of the William C. Whitney estate and now called “Round Hill at Westbury.” No expense was spared in creating this 21’ Century masterpiece of residential architecture rivaling and perhaps surpassing many of the grand “Great Gatsby Era” estates for which Old Westbury is so well known. With approximately 12,000 square-feet encompassing 7 exquisite bedrooms, 7 baths and 5 powder rooms, and enthralling principal rooms, the residence is ready for entertaining on a grand scale. Its beautifully designed property offer many venues for summer enjoyment with an inground Gunite pool, tennis court, and expansive bluestone terraces offering breathtaking vistas. Though seemingly far removed from all hustle and bustle of the world, this exceptional home is extremely convenient to premier shopping, including the Americana at Manhasset, world renowned hospitals, museums, golf, equestrian facilities, and major highways putting it within approximately a ½-hr commute to Manhattan. Replete with meticulously crafted millwork, stunning ceilings, hardwood floors, French doors and intricate tile accents in kitchen and baths, this exceptional home greets all with an enthralling entrance hall featuring a serpentine staircase with filigree balustrade ascending within a turret. Both the bright and airy living room and warm and inviting mahogany library feature inviting fireplaces and French doors to the terrace. The banquet sized formal dining room is elegant in every detail. The spectacular French country kitchen is a work of art with its Delft tile accents, cobblestone floor and extensive custom cabinetry with huge center island. High-end appliances include a large professional gas stove, ample refrigerators and freezers. French doors to the terrace, a kitchen eating area and a darling breakfast turret room add to the appeal of this fabulous space. From the striking second floor landing with coffered and barrel ceilings, the palatial master suite reveals a romantic retreat with gorgeous master bedroom offering a fireplace and dome ceiling, a large private balcony, 2 lavish baths, one paneled in mahogany, the other with mosaic floral décor, and 2 4-season dressing rooms with huge walk-in closets. Three additional luxury bedrooms with designer baths en suite and walk-in closets, plus a family room complete this floor. The full, finished basement is ideal for entertainment with a charming mahogany walk-in wet bar with seating, a lounge with built-in aquarium, media/game room, gym, bedroom and 2 baths.