The most expensive apartment closing in New York City this year and one of the priciest sales ever is finally a done deal, reports The Real Deal. The apartment, the top penthouse at Rafael Viñoly-designed billionaire’s bunker 432 Park Avenue, is the priciest unit in the big-ticket building as well as being literally the city’s highest. As 6sqft previously reported, the buyer is Saudi retail magnate Fawaz Al Hokair. The sale price was $87.7 million — a skyscraping $10,623 per square foot.

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