Welcome to 15 Old Gulph Road, an architectural masterpiece in a serene, private location set amidst 1.69 exquisitely landscaped, gated acres featuring over $350,000 in recent enhancements by the current owners. This extraordinary residence is a rare fusion of classic architecture and timeless design with a flexible layout to accommodate any lifestyle. Redesigned in 2012 by celebrated architect Carlas Valhonrat, protégé and colleague of Louis I. Kahn, the home represents a perfect harmony between nature and structure, serenity and sophistication. The unsurpassed beauty of the landscaped gardens generates a peaceful energy that carries forward as you enter the home. The home's design emphasizes light and openness, with floor-to-ceiling windows, wide balconies, secret walled patios, and five fireplaces on the entry floor anchoring the expansive, open-concept living spaces carefully designed to offer stunning views from every window and filling the home with abundant natural light. The main house offers 5--6 bedrooms and 6 full baths, including a luxurious Primary Suite with dual baths, featuring both steam and traditional showers, extensive custom designed closet space, and a third-level dressing room/cedar closet featuring a motorized dry-cleaning-style hanging system. Each secondary bedroom enjoys its own en suite renovated bath, showcasing classic materials used in imaginative ways. A third level on one side of the home offers two bedrooms and full bath while a separate third floor space above the Primary Suite offers an additional Bedroom and full Bath, ideal as a Private Study or Professional Home Gym. The main floor features rich hardwood flooring throughout and a fabulous Kitchen, Breakfast Room & Family Room area that serves as the heart of the home offering. The Outdoor Living Area is equally impressive and truly a gardener's dream featuring lush new landscaping, mature specimen plantings, new exterior lighting, and a new awning on the lower terrace. A circular inlaid courtyard leads to a two-car garage topped by a charming in-law/au-pair suite with Kitchenette, full Bath, walk-in Closet, Laundry and generous storage. A separate 3--4 car garage with private gated access from Old Gulph Road provides additional space for collectors or enthusiasts and provides the perfect blank canvas to create additional future living space, perhaps a Guest Cottage. Located in one of the Main Line's most coveted settings, this exceptional home is convenient to the area's finest private and public schools, country clubs, universities, shopping, dining, trains and major transportation routes to Philadelphia and New York. Schedule an appointment for your private tour today.