Penthouse 37—the pinnacle of the only New York City residential tower designed by the legendary late designer Zaha Hadid—is now on the market for $50 million. Located at 520 W. 28th Street, the curvaceous, glass-enclosed penthouse embodies Hadid’s signature avant-garde style. The 6,853-square-foot residence features five bedrooms and six-and-a-half bathrooms, a 2,218-square-foot terrace, and two private balconies. A flowing three-story staircase links the penthouse with the wraparound rooftop terrace, which is equipped with a glass-enclosed pavilion overlooking the city skyline. An outdoor kitchen, grill, and garden are tailor-made for barbecues and sophisticated soirees alike.

The upper level presents a 1,250-square-foot great room with a fireplace and private balcony. The modern kitchen is equipped with a sculpted marble island and Gaggenau appliances. A library, powder room, bedroom, and a utility room round out the floor. The lower level is comprises a giant master suite with two dressing rooms and two master bathrooms, as well as three bedrooms, and a wet bar. Also equipped with a private elevator, more than 11-foot-high ceilings, and floor-to-ceiling windows, the apartment is a truly bespoke reflection of Hadid’s masterful eye for design. (Inquiries: 520 W. 28th Sales Galley, info@520w28.com, 212.502.5528, 520w28.com)