Peek Inside the $15M Penthouse Topping Architect Álvaro Siza’s Masterful Hell’s Kitchen Tower

Completed in 2022, 611 W 56th Street in the Hell’s Kitchen neighborhood of Manhattan is 92-year-old, Pritzker Prize-winning architect Álvaro Siza’s only project in the United States. To own any of the tower’s 77 residences is special, of course, but the full-floor duplex penthouse crowning this over 450 square-foot-tall creation is the trophy property. Offering 5,100 square feet of interiors and a 1,572-square-foot wraparound terrace, the sky-high unit is now listed for $15 million. So, take a peek.

The world-renowned Portuguese architect’s vision for the building was one of purity, clarity, and a “less is more” mentality, focusing primarily on materials and form. It’s dressed in white Perla Bianca limestone, which is laid in a grid, and topped by a 53-foot bulkhead that takes a patterned limestone look all the way up.

The penthouse sits just below this sculptural building topper, promising the most expansive views. Just like the rest of the residences, it holds interiors by Gabellini Sheppard, who brought in beautiful natural stone and wood choices that harmonize with the shimmering city surroundings.

An elevator whisks you right up to the duplex, plus allows you to go between its two levels when the stairs are inconvenient. The bottom floor is where most daily living may take place. Especially, in wintertime. It holds four of the unit’s five bedrooms, the main kitchen and main living/dining area, and most of the bathrooms but no outdoor space. Ascending upstairs, there is less to see inside—one luxe bedroom and a large living room/kitchenette—with most of the square footage allotted for the striking terrace. A new owner can wake up and step out to see the city in all its glory or host posh al fresco parties with the Hudson River as their backdrop.

Gilad Azaria and Lolita Peradze of Douglas Elliman hold the notable listing.