The biggest purchase by far in One57 has been the closing on the duplex penthouse on the 89th and 90th floors. The penthouse sold for over $100 million in January. | Viewing NYC

Peek Inside One57, the Newest Building to be the Most Expensive in the City

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The biggest purchase by far in One57 has been the closing on the duplex penthouse on the 89th and 90th floors. The penthouse sold for over $100 million in January.