siva tower, designed by pritzker prize–winning architect álvaro siza with interiors by gabellini sheppard, is a rare architectural landmark on manhattan’s west side. clad in perla bianca limestone and rising as a slender sculptural form, the tower offers only 77 residences, each conceived with siza’s signature precision, calm, and timeless restraint. positioned within hudson west, just north of hudson yards and moments from lincoln center, columbus circle, waterline square, and billionaires’ row, this is the most refined addition to the west side’s emerging “architects’ row.” duplex residence 8b/9b offering four bedrooms, four and a half bathrooms is an expansive corner home with dramatic scale and soaring double height volume. encompassing 2,721 interior square feet paired with 841 square feet of private outdoor space, the residence offers 3,562 square feet of indoor–outdoor living. when valuing exterior space at 50% of interior, the home achieves an impressive $1,590 per adjusted square foot is an exceptional long term value. direct elevator access on both levels enhances privacy and arrival, while south and west exposures fill the home with sunlight throughout the day. the great room serves as the architectural centerpiece, featuring dramatic double height ceilings and floor to ceiling windows that open directly onto a private terrace, creating a seamless connecting the space. a sculptural staircase with floating oak treads and a custom glass railing anchors the residence with a sense of craftsmanship and vertical elegance. elevated details throughout include an oea faucet package, simonswerk concealed hinges, comelit entry system, and central hvac with discreet linear diffusers and recessed shade pockets. the windowed italian aster cucine kitchen and island, pairing warm walnut cabinetry with honed grigio nicola marble on the countertops and backsplash. a full suite of gaggenau appliances includes a panel ready refrigerator, freezer, dishwasher, five burner gas range, cabinet oven, speed oven, and an 80 bottle wine and beverage cooler, complemented by a bosch pullout hood, julien stainless steel sink, and integrated recycling bins. all four bedrooms feature ensuite bathrooms. the primary suite offers a generous walk in closet and a serene five fixture bath with an aster cucine floating double vanity, dual medicine cabinets, heated floors, a kartell laufen wall hung toilet, deep soaking tub, and oversized rain shower. secondary bathrooms continue the elevated materiality with aster cucine vanities, medicine cabinets, deep soaking tubs with glass guards, walk in showers, and nk toilets. a well placed powder room on the main level includes a kartell laufen wall mounted toilet and an in unit bosch washer/dryer adds everyday convenience. 611 west 56th street delivers a comprehensive amenity experience, including a technogym fitness room with equipment by antonio citterio, dedicated yoga and boxing rooms, men’s and women’s changing rooms with showers and illuminated steam rooms, a children’s playroom, a media room with billiards, and an elegantly furnished residents’ lounge by ddc and minotti with a catering kitchen. a landscaped garden by m. paul friedberg, featuring original works by álvaro siza, anchors the building’s serene outdoor environment. a 24 hour attended lobby, concierge, porters, management, cold storage, bike room, and supplemental laundry room ensure effortless living. private storage and parking with direct lobby access are available for purchase. the neighborhood offers immediate access to hudson river park, riverside park south, pier 97, pier 96 boathouse, pier 94 sunset studio, de witt clinton park, and convenient transportation via the n, r, w, and 1 trains and multiple 57th street bus routes. the complete offering terms are in an offering plan available from sponsor. file no. cd18 0061. sponsor: 611 w 56th street property llc, 520 west 27th street, suite 302, new york, ny 10001.