The Apthorp A Landmark Upper West Side Residence 390 West End Avenue - The Apthorp - is an address recognized globally for its history, scale, and quiet sophistication. This four-bedroom, four-bathroom residence spanning approximately 3,100 square feet represents a rare opportunity to acquire a fully renovated home within one of Manhattan's most distinguished full-service condominiums. The residence unfolds through a dramatic 30-foot entry gallery-an arrival moment that immediately establishes scale and architectural significance. Hand-cut marble mosaic floors, herringbone oak hardwood, soaring 11-foot ceilings, and meticulously restored crown moldings reflect a level of craftsmanship rarely replicated today. The living room is anchored by one of two ornate working fireplaces and framed by oversized windows that draw in natural light throughout the day. Southern exposures open to expansive city views, creating a setting equally suited for formal entertaining and quiet daily living. The dining room offers a more intimate atmosphere, centered around the second fireplace and overlooking the building's iconic landscaped courtyard and central fountain - an inward-facing perspective that brings a sense of calm and privacy rarely found in Manhattan. The fully renovated eat-in kitchen is designed with both performance and aesthetics in mind. Outfitted with a La Cornue range, Sub-Zero refrigeration and wine storage, custom Vent-A-Hood, and a five-burner configuration, it delivers a professional-grade culinary experience. Two large courtyard-facing windows introduce natural light and a tranquil backdrop. The primary suite is positioned as a private retreat within the home, featuring south-facing windows, a substantial custom walk-in closet, and a spa-quality Carrara marble bathroom. Finishes include a double vanity, deep soaking Jacuzzi tub, glass-enclosed shower, and Duravit bidet - balancing comfort with refined design. Three additional bedrooms are generously scaled, each offering custom walk-in closets and en-suite marble bathrooms with radiant heated floors and premium fixtures by Baccarat and Samuel Heath, ensuring consistency in both quality and experience throughout the residence. A dedicated laundry room and fully integrated smart home systems - including Somfy motorized shades, Nest climate control, and Sonos audio - complete the home, seamlessly integrating modern functionality into a historic framework. Originally commissioned in 1908 by William Waldorf Astor and designed by Clinton & Russell, The Apthorp remains one of the few residential buildings in Manhattan to occupy an entire city block - an architectural distinction that continues to define its presence today. Life at The Apthorp is defined by privacy, service, and a level of infrastructure rarely found even among Manhattan's premier buildings. Residents enjoy two staffed gatehouses, four attended lobbies, and a private porte-cochère with on-site parking - offering a seamless arrival experience. The building features a 6,500-square-foot fitness center with sauna, steam, and yoga studio, private treatment rooms, residents' lounge with catering kitchen, landscaped roof terraces, children's playroom, bicycle storage, and a live-in resident manager supported by full staff. The Apthorp is more than a residence. It is a legacy address-defined by architecture, scale, and a level of living that remains unmatched on the Upper West Side.