Perched atop one of the Upper West Side's most distinguished landmark buildings, The Landmark Penthouse at 393 West End Avenue presents a rare opportunity to acquire and customize a bespoke trophy residence of remarkable scale within a meticulously restored pre-war condominium offering the services, amenities, and conveniences of a modern full-service luxury building. Occupying the entire 17th floor, this extraordinary residence encompasses approximately 4,230 square feet of interior living space and 3,083 square feet of private outdoor space, totaling more than 7,300 square feet of private living and entertaining space on one contiguous level. A dramatic wraparound terrace encircles all four sides of the residence, while soaring ceilings and expansive floor-to-ceiling windows frame panoramic views stretching from the Hudson River and Riverside Park to the iconic Manhattan skyline. Designed by the award-winning team at CetraRuddy Architecture, the penthouse has been thoughtfully envisioned with five generously proportioned bedrooms, a minimum of four full bathrooms, an expansive corner great room opening directly onto the wraparound terrace, an oversized eat-in kitchen with a corner breakfast room or den, a dedicated study or home office, and ceiling heights reaching approximately 10 feet. Equally compelling is the flexibility of the design. Available to purchase prior to interior completion, the residence offers an extraordinary degree of customization, allowing a purchaser to tailor the layout, finishes, and detailing to reflect their own vision, lifestyle, and aesthetic. Purchasers may work with their own architect and design team or engage Rabina to provide a comprehensive suite of design, construction, and project management services, delivering a fully finished residence while honoring the original architectural vision by CetraRuddy. Drawing upon decades of development and construction expertise, Rabina can seamlessly oversee every stage of the process, offering an efficient and highly coordinated path to creating a custom home of exceptional quality. Situated at the corner of West End Avenue and West 79th Street within the West End-Collegiate Historic District, 393 West End Avenue seamlessly blends the grandeur of pre-war architecture with contemporary luxury. Originally constructed in 1927, the landmark building has been meticulously restored by Rabina and CetraRuddy Architecture, preserving its distinctive Collegiate Gothic character while introducing approximately 50 beautifully crafted condominium residences and approximately 4,000 square feet of thoughtfully curated amenities. Residents enjoy a 24-hour attended lobby, fitness center, club room, children's playroom, landscaped courtyard, and exceptional service, all moments from Riverside Park and the Upper West Side's celebrated cultural institutions, restaurants, boutiques, and schools. With its expansive single-level floor plan, extraordinary outdoor living, distinguished architectural pedigree, and unmatched flexibility for customization, The Landmark Penthouse represents a once-in-a-generation opportunity to create a truly one-of-a-kind residence atop one of the Upper West Side's most iconic landmark addresses. The Landmark Penthouse is offered at $13,900,000 prior to interior completion or may be delivered as a fully finished residence developed in collaboration with Rabina (price upon request). An additional one-bedroom residence on the first floor is also available for purchase and immediate occupancy, providing an ideal guest suite, private office, or staff residence.