Mid-Century Modern Masterpiece in the Heart of Ladue. Designed by renowned architect Robert McMahon and built in 1955, this one-of-a-kind Mid-Century Modern gem sits on a serene and private 3/4-acre lot in one of Ladue's most sought-after locations. Tucked behind a circle driveway, this 2,792 sq ft home is a rare blend of timeless architectural detail and modern updates. Signature MCM elements about- floor-to-ceiling windows, natural stonework, warm wood finishes, cork and slate floors - all thoughtfully preserved and integrated throughout the home. The beautifully updated kitchen features a breakfast bar and premium appliances, including a Dacor electric cooktop, Gaggenau gas cooktop, Bosch dishwasher & convection oven, and Sub-Zero refrigerator. The home offers generous living spaces: a bright dining room, large living room with fireplace, cozy family room with wet bar, and a stunning 3-season room that brings the outdoors in. Two fireplaces, two patios, a walk-in cedar closet, main floor laundry, and a covered front porch with a tranquil water feature elevate the living experience. With a spacious two-car garage, this property is both functional and fabulous. Located minutes from Clayton, Plaza Frontenac, Highway 40, and Ladue's top amenities, this is a rate opportunity to own a true Mid-Century treasure in an unbeatable location.