A true architectural standout in Lake Barcroft, 3421 Stoneybrae Drive delivers the kind of Mid-Century Modern design that's increasingly hard to find-thoughtfully updated, beautifully maintained, and seamlessly connected to its natural surroundings. This 4-bedroom, 3-bath residence is defined by its dramatic vaulted ceilings with classic Eichler beams and an extraordinary 23-foot wall of glass that frames serene wooded views and fills the home with natural light throughout the day. The kitchen strikes a perfect balance between form and function, featuring high-end appliances including a Thermador Freedom induction cooktop, generous workspace, and sunlight streaming through ten well-placed windows. Multiple gathering spaces create warmth and character, anchored by three gas fireplaces and a striking copper hooded centerpiece in the conversation pit-an unmistakable nod to the home's mid-century roots. Set on a private, elevated lot, the outdoor spaces are just as compelling. A newly expanded patio flows to a 20x40 turfed terrace, offering ample room to entertain, relax, and take in the surrounding grove of trees. Recent improvements-including a new 30-year roof, exterior repainting, EV charger, built-in carport storage, front porch addition, and extensive hardscaping-mean the home is truly move-in ready. Inside, the primary suite has been elevated with a renovated bath and walk-in closet, complementing earlier kitchen and main-level updates. Location is a key part of the story. Tucked within one of Northern Virginia's most unique communities, residents enjoy exclusive access to a private 135-acre lake, five sandy beaches, and a calendar of neighborhood events through the Lake Barcroft Association. Beach #3-just a short walk away-offers a playground, picnic areas, and a dock for swimming, boating, paddleboarding, and fishing. All of this, with easy 10-15 minute access to destinations throughout the Beltway. For buyers seeking architectural integrity, privacy, and a true lifestyle community, this is a rare opportunity worth a closer look.