20th-century gems by Philip Arctander, Le Corbusier, Pierre Jeanneret, Serge Mouille , and Charlotte Perriand mingle in the viewing room. Edward Fields Sisal rug.

A mobile chandelier by Michael Anastassiades hangs over the Pierre Jeanneret dining table and chairs. Picasso owl vase on table.

Pierre Jeanneret stools sit at the marble-topped kitchen island. La Cornue range; Apparatus brass pendants.

Sebastian, Kevin, and the boys play chess at a table set with vintage Italian garden chairs.

In the living room, a pair of armchairs by Pierre Jeanneret, a roly poly chair by Faye Toogood , and a sofa by Christian Liaigre surround a Jean Prouvé cocktail table. Serge Mouille floor lamp; Axel Jarl painting.

An 18th-century mantel centers the library. Paintings (from left) by Nathalie du Pasquier and Landon Metz; Jean Royère armchair; Willy Guhl chair; Gianfranco Frattini cocktail table; Jean Prouvé stool; Jorge Zalszupin sofa.

An Axel Einar Hjorth dining table with a Charlotte Perriand chair and custom banquette create a kitchen breakfast nook. Photo-graph by Wim Wenders .

Art by Picasso and Pierre Le-Tan lines the study, where a Tapio Wirkkala lamp sits on the Axel Einar Hjorth desk; Jean Prouvé office chair.

The swiveling entrance to the boys’ bedroom. Vintage rug.

A Japanese teak bench by Andrianna Shamaris lends a wabi-sabi note to the master bedroom. Vico Magistretti lamps on custom side tables; artworks by Jannis Kounellis (center) and Jayson Musson .

The boys’ bedroom features built-in benches and bookshelves. Lounge chairs from Suite NY .

Sons Alex and Dylan, in Bonpoint tunics, run through the garden at their home in Watch Hill, Rhode Island.

The 1903 manse takes in stunning ocean views.