Ascend to a true "townhouse in the sky," perched atop one of the Upper West Side's most coveted tree-lined blocks. Bathed in natural light, this exceptional triplex masterfully blends expansive indoor-outdoor living, loft-like proportions and the privacy of a single-family residence. The experience begins in a spectacular, fully renovated great room where soaring ceilings, exposed brick and a wood-burning fireplace create an atmosphere of timeless sophistication. Expansive south-facing windows flood the space with sunlight while framing a picturesque skyline and treetop views. At the heart of the home, the beautifully appointed designer kitchen seamlessly integrates with the living and dining areas, creating an inviting setting for everything from intimate mornings to elegant entertaining. Also on this level are two tranquil bedrooms overlooking lush garden views, a beautifully finished full bath and a thoughtfully designed laundry area, offering both comfort and convenience. One level below, a generous secondary great room offers exceptional flexibility. With its own full bath and private entrance, this expansive space is ideally suited as a media room, guest suite, home office, or fourth bedroom. Occupying the entire top floor, the primary suite is a serene private retreat designed for luxurious everyday living. A wall of custom-built closets provides abundant storage, while the spa-inspired en-suite bath offers a peaceful escape. Just beyond awaits the home's crowning jewel: an expansive, meticulously landscaped private roof terrace. Thoughtfully designed for relaxing, dining, and entertaining beneath the open sky, this extraordinary outdoor oasis feels like your own private park above the city. Located at 157 West 78th Street, an intimate boutique co-op in the heart of the Upper West Side, this remarkable residence places you just moments from Central Park, the American Museum of Natural History, and the neighborhood's celebrated dining, shopping, and cultural destinations. Pets are welcome, though pied-à-terre ownership is not permitted.