Architect Peter Pennoyer and interior designer Shawn Henderson devise a dazzling reinvention for an 1850s Greenwich Village townhouse Hired to gut and rebuild a dilapidated 1850s Manhattan townhouse, Peter Pennoyer Architects crafted a spiraling staircase as a dramatic focal point. The project's interior designer, Shawn Henderson, outfitted the rear parlor as a dining area, with a midcentury Angelo Lelli for Arredoluce chandelier, vintage French sconces from Elle W Collection, a glass-top table by Silas Seandel, and vintage Paul Evans chairs covered in a Castel fabric. Flanking the mantel are artworks by one of the homeowners (left) and Mark Titchner; the banquette is upholstered in a Pollack velvet. Peter Pennoyer installed a new stoop—the original had been removed—and graceful ironwork, which was copied from a nearby residence dating from the same period. In the front parlor, a custom-made sofa by Shawn Henderson is paired with a carpet he designed for ALT for Living; Soie de Lune fabrics from Lauren Hwang were used for the curtains and the sofa's throw pillows, the latter accented with a Samuel & Sons fringe. The kitchen includes a Sub-Zero refrigerator and a Wolf range and wall ovens; the antiqued-mirror backsplash tile is by Ann Sacks, the sink fittings are by Waterworks, and the stools are from Mark Jupiter. One of the kitchen's two circa-1950s French holophane lights from Avantgarden hangs above the breakfast area's Chris Lehrecke table from Ralph Pucci International; the painting is by George Lloyd, and the Moroccan floor tile is by Mosaic House. Teak furniture by Henry Hall Designs from Walters is arranged on the new limestone terrace of this Peter Pennoyer—designed New York townhouse, which is equipped with a Viking grill; the garden was designed by Madison Cox Assoc. and the Organic Gardener. A wrought iron balcony is seen above. A Sandy Skoglund photograph is mounted over the library’s custom-made rosewood-and-walnut credenza; the carpet is by ALT for Living. A painting by Frederick Lynch presides over the penthouse sitting area, which features curtains made of a Donghia fabric and a carpet from ALT for Living. On a rooftop terrace, Madison Cox and the Organic Gardener created an oasis with linden trees and boxwood in copper planters; the table and chairs are by Janus et Cie. A Peter Hujar photograph and a rosebush sculpture by Sam Tufnell distinguish the master bath; the tub fittings are by Waterworks. An artwork by one of the homeowners adds a burst of color above the master bedroom’s fireplace, while a Matthew Barney photograph is displayed on a bookshelf; the armchairs (one is shown) and small ottoman are vintage designs by Lloyd Wright. The walls and the Crate and Barrel bed are upholstered in the same Holland & Sherry wool felt used for the curtains; the painting between the windows is by Rachel Bess, and the photographs over the bed are by Hujar. Sconces in the style of Paavo Tynell are mounted on either side of the entrance hall’s vintage John Dickinson console; the collage at left is by George Condo. Artworks by Jason Shawn Alexander (left) and Hernan Bas are displayed in the media room. In a guest room, a vintage Peter Rockel light fixture hangs above a circa-1950 Vladimir Kagan seating unit.