Welcome to 6417 Wissahickon Avenue, a masterpiece of historic architecture. This stunning circa-1925 stone Colonial is tucked away in a private garden sanctuary in West Mount Airy. Spanning 9 bedrooms and 4.5 bathrooms, this impressive estate flawlessly unites classic craftsmanship with sophisticated modern updates. Original hardwood floors, handcrafted plaster crown molding, a timeless slate roof, and authentic stone masonry showcase the home's rich heritage at every turn. Step through the foyer, where a setback staircase creates an unforgettable first impression. To one side, a sunlit living room centers around a classic fireplace; to the other, a formal dining room connects directly to a remarkable two-story glass solarium framing year-round views of the surrounding lush canopy. The main level also boasts a large kitchen and an adjoining pantry, laundry room, and half bath. Upstairs on the second floor, you will find four generously sized bedrooms and two full baths, including a flexible den space with a private balcony overlooking the upper level of the solarium, connected via a spiral staircase. The third level offers three additional bedrooms and an additional full bath, providing flexible space for bedrooms, offices, guests or other uses. Adding incredible versatility, a separate guest house sits above the detached two-car garage, offering a full living area, kitchenette, and full bathroom. The expansive basement in the main structure provides substantial shelved storage, a tool room/workshop, wine cellar and an auxiliary kitchen area with additional appliances. Outside, the professionally landscaped grounds surround the home in year-round natural beauty and privacy, complemented by a concrete driveway for ample off-street parking. Conveniently located just minutes from Wissahickon trails, local cafes, and the Center City commuter rail via Lincoln Drive, this property offers a rare opportunity to own a true West Mt. Airy treasure!