A one-of-a-kind architectural estate awaits on 2.46 secluded acres in the coveted Radnor Township enclave of Wayne, 308-310 Julip Run spans two parcels (one deed, two separate tax IDs), featuring a 9,238-sq-ft contemporary main residence originally built in1982 and transformed by a multi-million-dollar contemporary redesign in 2007 including a 3,956-sq-ft carriage house/garage. Designed in harmony with nature, the home offers privacy, panoramic views of preserved open space, and proximity to the historic Willows Duck Ponds. A lantern-lit path leads to the entrance of the one-of-a-kind steel-and-concrete main residence. Immense windows frame every view and flood interiors with natural light. The reverse-level layout provides entry into the second-floor sleek foyer w/ black marble flooring and a dramatic glass-and-chrome staircase. Ahead, a wall of glass in the dining room captures southern vistas. The living room with floor-to-ceiling windows, rosewood flooring, and a scalloped floor-to-ceiling rosewood mantle opens to an Ipe deck overlooking a cascading runnel. A curved-wall library features a 15ft slanted ceiling and built-in bookshelves. A formal powder room features a trompe l’oeil tile floor. The large chef’s kitchen features bespoke birds-eye maple cabinetry, Saudi Arabian granite countertops, black marble flooring, and high-end appliances including a Wolf 6-burner gas cooktop w/ grill, 2 Wolf ovens, Gaggenau steam oven, and Sub-Zero refrigerators/freezer. The kitchen flows into a sitting area and breakfast nook w/ windows framing views of the 576-sq-ft infinity pool and 100+-year-old walnut tree. A few steps down, the great room presents soaring ceilings, maple flooring, custom entertainment center, and panoramic east/south/west views. The 1,500 sq ft third-floor primary suite w/ leather flooring includes an office with rosewood screens and desk, bedroom w/ fireplace, sitting area, kitchenette, and 2 full baths. Skylit stairs lead to a rooftop deck w/ a hot tub and unmatched views. A 23K-gold-leaf and onyx rotunda sits between two marble vanities w/ inlaid rosewood cabinets, a 10ft marble shower w/ glass ceiling, and two walk-in closets with center island. A loft provides 500-sq-ft of flex space and storage. Level one offers three egresses and full windows. There are two bedrooms, two full baths, spacious family/media room w/ cork flooring, gym w/ rubber flooring and sweeping views, 3,000-bottle African walnut wine cellar, and an impressive laundry room w/ storage. Additional features include Lutron lighting, radiant-heated floors, 3-car climate-controlled garage, whole-house generator, smart security and a new roof (2025). Outside, lush landscape design incorporates native plantings and mature trees from the original estate, a 16’X36’ infinity-edge pool, full outdoor bath for pool use, multiple gardens, fountains, a cascading runnel and bluestone patios. A shaded path leads to the carriage house/garage on its own 1.06-acre parcel, ideal for guests, rental, or subdivision. Enter the second-floor loft-style apartment through a curved white oak wall entrance. The open concept floor plan includes soaring ceilings, a full kitchen, full bath, bar, and spaces that flow together including an office, dining, sitting area, 1 bedroom area, plus a private terraced garden. The car enthusiasts garage below includes 2 climate-controlled bays, Lutron and recessed lighting, a built-in TV/entertainment center, and a wine cooler. Another bay offers motorized storage and catering space. There is also an additional bedroom/office w/ murphy bed, full bath and closet. This space has an independent generator and security. Situated within the top-ranked Radnor School District, close to premier private schools, shopping, dining, area country clubs, downtown Wayne, major commuter routes including I‑476, and the Wayne train station (2.1 miles w/ service to Phila. and NYC).