A black-and-white work by Christopher Wool and a large Marisa Merz painting hang on opposing walls in the château’s entrance gallery, which French designer Nathan Litera furnished with a Holger Johansson chandelier, an Ado Chale table, and a low bench by Jorge Zalszupin.

Robert Mangold painting adds a splash of color to the serpentine central staircase, where Litera updated the landmark balustrade by painting it dark brown; a work by Christian Boltanski is installed above a George Nakashima bench, while a large Kazunori Hamana ceramic pot rests nearby on the floor.

A work by Gilbert & George presides over a family room sitting area furnished with an array of vintage European pieces, including an Angelo Mangiarotti marble side table; the curtains are made of a Pierre Frey fabric.

In the breakfast room, a Geoffroy Van Hulle table, Pierre Jeanneret cane chairs, and an André Arbus stool are grouped next to works by Sterling Ruby (left) and John Baldessari.

For one end of the family room, Litera designed a mirror-backed marble bar set into the dark-wood paneling that also serves as a backdrop for a large Jean Dubuffet painting over the fireplace. Pierre Jeanneret armchairs and a vintage Belgian sofa join tables with tops crafted from panels of wood flooring.

Inside a Belgian château designed by Nathan Litera, a textural painting by Pierre Soulages surmounts a Jean-Michel Frank parchment table in the hall outside the dining room, which features works by Christopher Wool (right) and George Condo.

Richly veined Breccia Viola marble surfaces add painterly panache to the kitchen, which is outfitted with a Holger Johansson chandelier, a Lacanche range, and Volevatch sink fittings.

A grid of Günther Förg abstract paintings and a George Condo portrait play off the cool refinement of the dining room, where Litera installed vintage Alvar Aalto pendants above the Jorge Zalszupin table and Johannes Andersen chairs.

Vintage Belgian sconces flank a vintage French mirror above a powder room’s antique marble sink with Volevatch fittings.

Maison Lunel swing-arm lamps and a Raoul De Keyser painting are mounted above the primary bedroom’s Vispring bed; the Pierre Jeanneret desk hosts a Felix Aublet lamp, the work in the corner is by Adolf Loos, and the bedside table is a vintage American design.

Litera designed fluted plaster moldings to frame the window above the primary bath’s Jacob Delafon tub, enclosed in Arabescato Carrara marble.

Brigitte Garnier outdoor furnishings are arrayed on a Hainaut blue limestone terrace overlooking the residence’s rear gardens, designed by Wirtz International Landscape Architects.

A trellised pathway in the garden.