Prints from Damien Hirst’s “Spot” series add contemporary pop to the Park Avenue apartment’s living room, which architect Peter Pennoyer anchored with a pair of banquettes crafted by Jouffre. The Jean-Michel Frank–inspired mica cocktail table is accompanied by 1950s Danish stools and Lucien Rollin Collection slipper chairs from William Switzer. The curtains are made of a Jim Thompson silk, and the jute rug is by Beauvais Carpets.

In the dining room, an Hervé Van der Straeten chandelier descends from the gold-leaf ceiling alcove that Pennoyer created above the Hutton Home table and chairs in the style of Carlo Mollino made by Jouffre; Studio Glustin sconces frame an artwork by Cecil Touchon over the Calacatta Vagli marble fireplace with Holly Hunt andirons.

A Franck Evennou mirror and Charles Paris sconces make a sculptural statement above the living room’s Calacatta Vagli marble fireplace with Holly Hunt andirons; custom-made bergères by De Angelis Ltd. are joined by an antiqued parchment table by Fischer Furniture and a Garouste & Bonetti gueridon, while a colorful artwork by Nir Hod hangs nearby.

Pennoyer installed custom-made lanterns by Remains Lighting above the kitchen island, and hung a Delisle pendant over the table fashioned after a Carlo De Carli classic by Fischer Furniture; the shades are by Hunter Douglas, the wall tiles and sink fittings are by Waterworks, and a bespoke RangeCraft hood is mounted over the BlueStar range.

In the sumptuously modern family room, a mohair-covered sofa by Jouffre is paired with Fritz Hansen–style armchairs by De Angelis Ltd.; the chandelier is by Nuvole Di Pietra, the walls are clad in a Mitchell Denburg raffia, and the rug is by Beauvais Carpets.

A former utility closet was reimagined as a bar, with a Jean Karajian Collection ceiling light, a tiger onyx countertop, and faux-painted zebrawood cabinets.

Pennoyer added paneling around the staircase and installed a floor of gray and white marble tiles in the entrance gallery; the ceiling lantern is by Hervé Van der Straeten, an André Dubreuil lamp stands on the 1920s Viennese tilt-top table, and the tiger-print runner is by Mitchell Denburg.

The powder room off the entrance gallery is outfitted with a Ralph Lauren Home sconce and pendant as well as a Palmer Industries granite-top vanity with a P.E. Guerin sink and faucet; the flooring is by Artistic Tile.

A Gracie silk covers the wall behind the bed in the primary suite, which features a vintage Orrefors ceiling fixture, bedside tables by Pierre Bonnefille, a bench by Jouffre upholstered in a Pierre Frey fabric, and a desk by Hutton Home.