Nasa isang kilalang sulok ng natatanging O'Neill Building, ang Penthouse B ay isang pangunahing duplex na tirahan na nagtutugma ng sukat ng Gilded Age sa kontemporaryong pagpapatayo. Orihinal na itinayo noong 1887 bilang isang pangunahing department store sa Ladies' Mile historic district, ang gusali ay muling inisip bilang isang koleksyon ng mga marangyang tahanan na nagpapanatili ng mataas na anumang mga puwang mula sa tradisyon ng cast-iron. Ang bahay na ito ay may sukat na 4,819 square feet ng panloob na espasyo, na sinamahan ng triple-terrace na outdoor program na may kabuuang higit sa 2,500 square feet.

Ang Great Room ay nagsisilbing pokus ng tirahan, na umaabot ng 53 talampakan ang haba at napalibutan ng higit sa 220 linear na talampakan ng mga bintana. Ang mga mataas na kisame at ang dobleng “southern” at “eastern” exposure ay nagbibigay ng napakahusay na likas na liwanag at panoramic na tanawin ng skyline ng Manhattan. Ang layout ay kasalukuyang inihahanda bilang isang bahay na may tatlong silid-tulugan ngunit orihinal na idinisenyo para sa apat na tunay na silid-tulugan, na nagbibigay-daan para sa makabuluhang kakayahang umangkop sa paano ginagamit ang espasyo.

Isang tampok na elemento ng ari-arian ay ang makasaysayang ginto na ito, ang Neo-Grec cupola. Isa sa iilang natitira sa New York, ang 43-talampakang mataas na kampanaryo na ito ay maaaring gawing pribadong silid ng media o opisina sa tahanan, na nag-aalok ng 360-degree na karanasan sa arkitektura. Ang kusina ay dinisenyo para sa malawakang pagtanggap, na nagtatampok ng malaking sentrong isla, Viking at Sub-Zero na mga kasangkapan, isang pantry ng butler, at isang hiwalay na silid-kainan.

Ang itaas na antas ay nakatuon sa pangunahing suite, na nagbibigay ng isang nakahiwalay na santuwaryo na may oversized spa bath at dalawang walk-in na dressing room. Ang antas na ito ay bumubukas patungo sa isang pribadong terrace, isa sa tatlong malalawak na panlabas na espasyo na pumapalibot sa tahanan. Kasama sa iba pang mga tampok ang isang pribadong service entry, isang nakatuon na 250-square-foot na storage unit na katabi ng apartment, at isang laundry room.

Ang O'Neill Building ay isang full-service condominium na nag-aalok ng 24-oras na doorman, concierge, at isang 4,000-square-foot na karaniwang rooftop deck na may outdoor kitchen. Matatagpuan sa puso ng Chelsea, ang gusali ay nagbibigay ng agarang access sa West Village at Flatiron, pati na rin sa marami sa mga pinaka-tanyag na culinary at cultural destination ng lungsod.

Occupying a prominent corner within the landmarked O'Neill Building, Penthouse B is a premier duplex residence that balances Gilded Age scale with contemporary architectural precision. Originally constructed in 1887 as a premier department store in the Ladies' Mile historic district, the building was reimagined into a collection of luxury residences that retain the soaring volumes of its cast-iron heritage. This trophy home spans 4,819 square feet of interior space, complemented by a triple-terrace outdoor program totaling over 2,500 square feet.

The Great Room serves as the residence's focal point, spanning 53 feet in length and framed by over 220 linear feet of windows. High ceilings and a dual southern and eastern exposure provide superlative natural light and panoramic views of the Manhattan skyline. The layout is currently configured as a three-bedroom home but was originally designed for four true bedrooms, allowing for significant flexibility in how the space is utilized.

A signature element of the property is the historic gold-coated Neo-Grec cupola. One of only a handful remaining in New York, this 43-foot high belfry can be converted into a private media room or home office, offering a 360-degree architectural experience. The kitchen is designed for high-capacity entertaining, featuring a large center island, Viking and Sub-Zero appliances, a butler's pantry, and a separate breakfast room.

The upper level is dedicated to the primary suite, providing a secluded sanctuary with an oversized spa bath and two walk-in dressing rooms. This level opens onto a private terrace, one of three expansive outdoor spaces that wrap the home. Additional features include a private service entry, a dedicated 250-square-foot storage unit adjacent to the apartment, and a laundry room.

The O'Neill Building is a full-service condominium offering a 24-hour doorman, concierge, and a 4,000-square-foot common roof deck with an outdoor kitchen. Located in the heart of Chelsea, the building provides immediate access to the West Village and Flatiron, as well as many of the city's most established culinary and cultural destinations.