James Dyson isn’t the only billionaire in the Manhattan real estate news this month to buy into Robert A.M. Stern’s newest high-rise 520 Park. Investment banker Ken Moelis also signed his name on an eight-figure check to call the building home, paying $62 million for one of 520 Park’s 9,100+ square-foot duplex penthouses. The difference? Apparently, a few floors.

Both units have the same layout, which, frankly, is spectacular. The six bedroom, 7.5 bath residences are serviced by two elevators which open into a foyer that leads to a central gallery; the double-height gallery features a sweeping staircase and is dressed in satin-finished white oak for a bit of contemporary detachment with a bit of warmth.

All other rooms—on both floors—extend from the central gallery, giving the duplex penthouses a sense of space that feels more expansive than even the considerable square footage might suggest; space is paramount to the Lenox Hill building’s design generally, as there are just 33 units across its 54 floors.

The kitchens and dayrooms open onto the terraces, which add several hundred square feet to the living space. The upper-level master suites feature unusually generous layouts even for this price range, with a pair of private baths, and private dressing rooms, situated on opposing sides of the bedrooms.

Sales at 520 Park have been brisk as the final touches on the building are completed; these two units sold within a week’s time. The building is crowned by a $130 million triplex, which is believed to still be available for sale.

Ken Moelis’ net worth is estimated at $1 billion.