The “Winter Garden” duplex penthouse at One57, Extell Development’s vitreous skyscraper, which has attracted a bevy of billionaire buyers since sales began in 2011, sold for $91,541,053 to a group led by the hedge fund mogul William A. Ackman. It was the second highest price ever paid for a single residence in New York City and the most expensive closed sale of the week, according to city records.

The priciest transaction, also at the 90-story condominium at 157 West 57th Street, was a 10,923-square-foot duplex penthouse on the top two floors that sold to a mystery buyer late last year for $100,471,452.77 and closed in January.

This most recent sale, No. 75, on the building’s 75th and 76th floors, is actually larger, by around 2,600 square feet; it includes six bedrooms, seven full baths and two powder rooms, spread over 13,554 square feet. The estimated monthly carrying charges are $25,289, according to Ashley Murphy, a spokeswoman for Extell, which declined to comment further on the sale.

Known as the Winter Garden, for its 2,500-square-foot curved-glass atrium that opens to the sky and is large enough to house a garden or swimming pool, the aerie provides an eagle’s-eye view of Central Park, along with vistas of the Hudson and East Rivers and almost every landmark on the horizon.